RMB digital currency cannot be exchanged for foreign exchange an

3.

For atoms: the number of electrons and protons is the number of elements. For example, h is element 1, which contains one electron and one proton

The neutron number should know the mass number. If you haven't learned this yet, the mass number can be simply regarded as the relative atomic mass, the number of neutrons = the relative atomic mass minus the number of protons. For example, if O is element 8, it has eight electrons and eight protons. Relative to the atomic mass of 16, the number of neutrons = 16-8 = 8

for ions, protons and neutrons are exactly the same as above, and electrons change, gain more and lose less. The method is similar

the number of electrons outside the nucleus = atomic number = proton number inside the nucleus = nuclear charge number (the number of electrons outside the nucleus of an ion = atomic number (sum) - charge number)

the maximum number of electrons held by each electron layer is 2n ^ 2 (n is the electron layer number). The number of electrons in the outermost layer is not more than 8 (when the k layer is the outermost layer, it is not more than 2). There are no more than 18 electrons in the second outer layer and 32 electrons in the last three layer

the extranuclear electrons are always arranged in the electron layer with the lowest energy first, and then from the inside to the outside, they are arranged in the L layer and then in the m layer. The above four laws are interrelated and cannot be understood in isolation

extended data:

neutrons exist in neutron stars as clusters (neutron stars are one of the few possible endpoints after supernova explosions e to gravitational collapse at the end of star evolution.) In the middle. The neutrons in the solar system mainly exist in all kinds of nuclei, and the neutrons in the elements are very rare β Decay is a change in which the neutron in the element releases an electron to become an element of the previous element sequence

Neutrons can be classified according to their velocities. High energy (high-speed) neutrons have the ability to ionize and penetrate deep into matter. Neutrons are the only ionizing radiation that can make other substances radioactive. This process is called "neutron excitation"“ "Neutron excitation" is widely used in the proction of radioactive materials in medical, academic and instrial fields

High energy neutrons can travel very long distances in air. Neutron radiation needs to be masked by hydrogen rich materials, such as concrete and water. Nuclear reactor is a common neutron source, and water is used as an effective neutron shield

arrangement rule:

1. The electrons are arranged in different layers from the nucleus to the nucleus, and the energy is from low to high

The maximum number of electrons in each layer is 2n2 (n is the number of electron layers)

There are no more than 8 electrons in the outermost layer (no more than 2 in the first layer), no more than 18 electrons in the second outer layer and no more than 32 electrons in the last three layers

In general, the electrons are always in the lowest energy layer, that is, the first layer, when the first layer is full, then the second layer, when the second layer is full, then the third layer

4. Box (enterprise digital asset safe) is a set of enterprise digital asset security solutions based on block technology. Based on the axiomatic technology of blockchain, cryptography, communication security and other fields, it realizes the seamless connection between technologies, and fundamentally solves the instry pain of private key theft and instruction tampering. At present, box mainly serves digital asset exchanges, digital asset investment institutions and related entrepreneurial teams.

5. Instrial Bank and Shanghai Gold Exchange announced recently that they will launch personal physical gold investment procts nationwide through the platform of Shanghai gold exchange, which is the first time for domestic commercial banks to launch this business. Instry insiders believe that the Shanghai Gold Exchange will further open gold investment to indivials in July, and the domestic gold market may face a new "reshuffle"

with the opening of gold trading in the exchange to indivials, the financial attribute of gold as investment has been more thoroughly reflected. Yang Yijun, from weierxin investment research center, believes that before that,
the gold exchange also concted a small-scale pilot of indivial gold investment. And before that, there was not no personal gold investment channel in China. Some banks and gold merchants have already launched their own investment gold bars or paper gold trading varieties. However, with the opening of the gold exchange to indivial gold investors, this part of the gold investment market will be impacted to a certain extent

taking bank paper gold as an example, the transaction cost of 0.8 yuan / g to 1 yuan / G is higher than that of the gold exchange. Based on the current gold price of 160 yuan / g, the handling charge for a round-trip transaction in the gold exchange is about 0.48 yuan / g, which is superior to the transaction cost of gold investment in the current market. Of course, the gold varieties traded in the gold exchange also have their disadvantages, that is, they can not buy back after applying for delivery, which is the advantage of some gold merchants
physical gold is the best hedging tool in the political and economic turmoil. The minimum purchase unit of physical gold investment is 100k, but it can be traded only when the physical gold is not put forward. Once the physical gold is extracted, it can not be traded legally, but it is not against the law to hold gold
you can open an account with instrial bank or Huaxia Bank, open online financial management function, and then you can buy and sell physical gold, and withdraw physical gold from Shanghai gold exchange.

6. In the past, the world's currencies were linked to gold, but if you think about it, the government could not use monetary policy. The appreciation and depreciation of currencies were completely determined by the discovery or transaction of gold. This is the gold standard. Later, the world's currencies were linked to the US dollar, but there were also problems in this system. The US dollar can only change when the exchange rates of all currencies change, This is the Bretton Woods system. After the collapse of the Bretton Woods system, the floating exchange rate system was adopted. However, our country actually controls the exchange rate. With foreign exchange reserves, the country can control China's exchange rate, which is concive to exports. The euro and US dollar are commonly used in International settlement. I'm interested in reading economic books.

7.

The NFC payment method is as follows:

1. First, find wechat on the mobile desktop and open it. As shown in the figure below:

8. Beijing News

the people's Bank of China recently announced that since January 4, 2006, it will introce inquiry Trading (OTC) in the inter-bank spot foreign exchange market to improve the formation of the central parity of RMB exchange rate. The reporter interviewed a spokesman of the people's Bank of China on relevant issues

reporter: what is OTC and how is it different from matchmaking<

Central Bank: OTC mode refers to spot foreign exchange transactions concted by trading entities in the inter-bank foreign exchange market through independent bilateral inquiry and bilateral clearing on the basis of bilateral credit

the differences between OTC and matchmaking are mainly as follows: first, the credit basis is different. OTC is based on the credit of both sides of the transaction, and the two sides of the transaction bear the credit risk by themselves, and the transaction can only be carried out after the establishment of bilateral credit. In matchmaking, all the trading entities take China foreign exchange trading center as the counterparties, The trading center bears the credit risk of market traders; Second, the mechanism of price formation is different. In OTC mode, the price is determined by both parties through negotiation, while in matchmaking mode, the transaction price is formed by computer matchmaking; Third, the clearing arrangements are different. The OTC method is arranged by both parties, while the matching method is centralized clearing by China foreign exchange trading center

reporter: what is the formation mode of the central parity of the new RMB exchange rate? When will it be implemented<

Central Bank: since January 4, 2006, the people's Bank of China has authorized China foreign exchange trading center to announce the central parity of RMB against US dollar, euro, Japanese yen and Hong Kong dollar at 9:15 a.m. every working day as the central parity of spot foreign exchange market (including OTC and matchmaking) and over-the-counter exchange rate

the central parity of RMB / US dollar exchange rate is formed in the following way: China foreign exchange trading center makes an inquiry to all market makers in the inter-bank foreign exchange market before the opening of the inter-bank foreign exchange market every day, and takes all market makers' quotations as the calculation sample of the central parity of RMB / US dollar exchange rate. After removing the highest and lowest quotations, the remaining market makers' quotations are weighted average, The central parity of RMB / US dollar exchange rate on that day is obtained, and the weight is determined by China foreign exchange trading center according to the trading volume and quotation of the bidder in the interbank foreign exchange market

the central parity rate of RMB against euro, yen and HK dollar is determined by China foreign exchange trading center according to the central parity rate of RMB against US dollar on the same day and the central parity rate of euro, yen and HK dollar against US dollar on the international foreign exchange market at 9 am<

reporter: what changes have been made in the floating range management of the RMB exchange rate after the improvement of the formation of the central parity rate of the RMB exchange rate<

Central Bank: after the improvement of the formation method of the central parity rate of RMB exchange rate, the floating range of the trading price of RMB against US dollar and other currencies in the inter-bank spot foreign exchange market and the spread range of the listed exchange rate of US dollar between banks and customers are still implemented according to the current bank regulations. That is: the daily trading price of RMB against US dollar in the interbank spot foreign exchange market fluctuates within the range of 3% above or below the middle trading price of RMB against US dollar announced by China foreign exchange trading center, and the trading price of RMB against non US dollar currencies such as euro, Japanese yen and Hong Kong dollar fluctuates within the range of 3% above or below the middle trading price of non US dollar currencies announced by China foreign exchange trading center. The bank implements the asymmetric management that the maximum bid ask spread of the listed exchange rate of US dollar spot exchange shall not exceed 1% of the trading middle price announced by China foreign exchange trading center, as long as the difference between the selling price and the buying price of spot exchange does not exceed 1% of the trading middle price of the day, and the range formed by the selling price and the buying price includes the trading middle price of the day; The difference between the selling price and the buying price of the bank's US dollar cash to the customer shall not exceed 4% of the middle price of the transaction. The bank can adjust the listing price of US dollar within the specified range of price difference

reporter: will the RMB exchange rate fluctuate significantly under the new way of forming the middle price<

the central bank: the new formation mode of RMB exchange rate middle price only changes the formation mode of middle price. The floating range of RMB exchange rate against US dollar and other currencies in the inter-bank spot foreign exchange market and the spread of bank's listed exchange rate against US dollar are still implemented according to the current regulations, and the RMB exchange rate will not fluctuate significantly: first of all, After the reform of RMB exchange rate formation mechanism on July 21, 2005, RMB is no longer pegged to any single currency, but based on market supply and demand, with reference to a basket of exchange rates. The exchange rates of the major currencies in the international market change with each other, which objectively reces the volatility of RMB exchange rate. Secondly, the main responsibility of market makers in the inter-bank foreign exchange market is to provide liquidity for the market. The introction of the market maker system has established a self-regulation mechanism of supply and demand in the foreign exchange market to a certain extent, which is concive to avoiding excessive price fluctuations in the foreign exchange market. Third, as the fundamental role of economic leverage such as exchange rate in resource allocation continues to strengthen, the relationship between supply and demand of foreign exchange is further straightened out, the balance of payments adjustment mechanism is graally established and perfected, and the balance of payments will tend to be basically balanced, thus laying a solid economic foundation for the stability of RMB exchange rate. Fourth, the state will continue to actively coordinate macroeconomic policies, steadily promote various reforms, and provide a good policy environment for RMB exchange rate stability. Finally, the people's Bank of China will strive to improve the level of regulation and control, improve foreign exchange management, and maintain the basic stability of the RMB exchange rate at a reasonable and balanced level<

reporter: what is the significance of introcing OTC into the interbank spot foreign exchange market and improving the formation of the central parity of RMB exchange rate<

the central bank: according to the needs of implementing and improving a managed floating exchange rate system based on market supply and demand, with reference to a basket of currencies, and following the development law of international foreign exchange market, it is necessary to introce OTC mode into inter-bank spot foreign exchange market and improve the formation mode of RMB exchange rate middle price. First, it is concive to the establishment of a variety of trading modes coexisting, and the establishment of a new exchange rate system Hierarchical and orderly foreign exchange market system and linked exchange rate transmission mechanism will promote the development of foreign exchange market and lay a solid market foundation for the improvement of RMB exchange rate formation mechanism; Second, it is concive to improving the representativeness of the central parity of RMB exchange rate under the new market structure. The quotations from market makers to China foreign exchange trading center reflect the market makers' expected foreign exchange settlement, sales and market making positions on the day and their judgment of the trend of the international foreign exchange market. Therefore, the announcement of the central parity of RMB exchange rate on the day's foreign exchange market on the basis of quotations is concive to further reflecting the regulation law of RMB exchange rate based on market supply and demand and referring to a basket of currencies; Third, it is concive to cultivating the price formation and feedback mechanism of the foreign exchange market, encouraging financial institutions to carry out active risk management, promoting the establishment and improvement of the balance of payments adjustment mechanism, graally balancing the supply and demand of the foreign exchange market, enhancing the elasticity of the national economy to cope with external shocks, and improving the efficiency of resource allocation. Fourth, it is concive to improving the core competitiveness of financial institutions, especially market makers, such as independent pricing ability and innovation ability, establishing a market-oriented positive incentive mechanism, and encouraging financial institutions to provide more diversified exchange rate risk management tools for enterprises and residents.

9. In fact, it's not what you understand, and you are also wrong. According to your understanding, it should be "every drop of one hand is a loss of $10"----- Under the leverage of 1:100, you can understand that each point is equal to 1% of your margin, but only about equal to

margin trading generally uses US dollars as a unit. For example, if you long the pound against US dollars, you have US $1000 on hand, and the leverage ratio is 1:100. Then you can use $100000 to operate. When GBPUSD is 1.4000, you can do long. That is to say, you divide $100000 by 1.4 and get 71429. When GBPUSD is up to 1.5000, you close your position. That is to say, if you multiply your 71429 by 1.5, it is equal to $107143. If you subtract $100000 from $107143, it is equal to $7143. This is what you earn. In fact, you earn 7.143 times. You earn 1000 points from 1.4000 to 1.5000. According to the first paragraph, you earn about 10 times, which is about 7.143 times

burst: for example, if you have $10000 in your account and you only operate $1000, the $1000 will not disappear. When you lose, the remaining $9000 will disappear. That is to say, you can bear 900% of the loss. When the loss reaches 901%, you will automatically close your position and your account will have $1000 left
after that, we have to dect the handling charge and add in the remaining $980. If the minimum unit of your system operation is 1000 US dollars, then 980 US dollars can't be operated, and you can only operate with at least 20 US dollars. No one is going to collect money from you

the third question will not be answered, in US dollars. No matter what the cross exchange rate is, it can be calculated by the above example. Long and short are just the opposite

10. Well, if you are a novice, I suggest you take a look at my passage< There are more and more foreign exchange friends now. There is a set of ways to know the black agent. Take a look at the characteristics of the fraud company: 1. Accept RMB in China and open an account with personal account (100% is fake)
comments: Based on the current situation in China, it is definitely difficult for dealers to do business in China without accepting private accounts in RMB. Therefore, it is not necessarily a black platform that can accept the amount of RMB violations. However, those who accept RMB 100% and do not accept overseas remittances at all are definitely black platforms operated by Chinese people<

2. Make up or change the name of the registration regulatory authority
comments: FSA of the UK, NFA of the US, financial services agency of Japan. In addition, the numbers of the regulatory authorities are all made up

3. Use the registration number of ordinary limited company to make up the registration number of the regulatory authority
comments: for example, companies in the UK only have the registration number of the company Bureau, but without the FSA supervision number, they are ordinary companies without license

4. The deposit account is a private account (not a personal account with the name of the customer)
comments: companies that do not handle the third-party trusteeship and do not have a special account for the customer in the name of the company are of course black platforms<

5. Accept virtual bank remittance and third-party remittance
6. Provide invalid departments and associations without supervision ability, claiming to have registration license
comments: for example, some companies have the registration number of private Futures Association, but they do not have the supervision number of government supervision department

7; Many of them use Internet phone, which can be transferred to any country
comments: for example, when a company is registered as a company in the United States, its English website is located in Beijing or Hong Kong. It was obviously founded by Chinese or Hong Kong people

8. Especially for overseas registered fraud companies, which register shell companies through intermediary companies and open local bank accounts, the actual shareholders never go to Hong Kong; The phone is answered by the Secretary company or transferred to any phone in China.
9. The local government does not protect the capital security of overseas investors, and licensed companies set up gambling platforms privately.
for example, licensed companies in the United States go to Australia to register a company with the same name to do business with Chinese people, which obviously violates the regulations

10. Hong Kong companies claim to be able to leverage 1:100, which should be noted. Hong Kong law stipulates that the leverage of foreign exchange margin shall not exceed 1:20
if you are speculating in foreign exchange by yourself, you can only play as a part-time part-time job. If you want to play well, you can change your goal of making money into not losing money in two years. If you can make money in the foreign exchange market, you are basically a master, and you can consider making money. Hey, it's not alarmist!