![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
How to judge the stability of elements by periodic table of chemical elements?
Look at the number of electrons in the outermost layer. From the left, it's one, eight
Noble gases are also stable
Elements in the periodic table that have special relationships, such as diagonal relationships
Can you tell me if there are other relationships like this besides diagonal relationships and the elements contained in these relationships
In the periodic table of Li, Mg, be, Al, be and Al, some main group elements have similar properties to the main group elements at the bottom right, which is called "diagonal rule"
Periodic table is an important tool for learning and studying chemistry. The following table is a part of periodic table
The top 20 symbol names of the periodic table of chemical elements are also abbreviated
Hydrogen (H)
Helium (he)
Lithium (LI)
Beryllium (be)
Boron (b)
Carbon (c)
Nitrogen (n)
Oxygen (o)
Fluorine (f)
Neon (NE)
Sodium (NA)
Magnesium (mg)
Aluminum (AL)
Silicon (SI)
Sulfur (s)
Chlorine (CL)
Argon (AR)
Potassium (k)
Calcium (CA)
RELATED INFORMATIONS
- 1. Weber's law
- 2. Is Weber's theorem the same as Veda's theorem? What is Weber's theorem in linear algebra?
- 3. Lofting calculation formula for 90 degree shrimp elbow with high resolution
- 4. The influence of Qinghai Tibet Plateau on the climate of China If there is no Qinghai Tibet Plateau, what will happen to China's climate!
- 5. The influence of Tibetan Plateau topography on atmospheric circulation
- 6. The relationship between ocean current, atmospheric circulation and climate types
- 7. Characteristics and distribution causes of world climate types (in tabular form)
- 8. Distribution of climate types in the world
- 9. What is the function of water?
- 10. What is the relationship between pressure belt, wind belt, land sea distribution, atmospheric circulation and monsoon? Who can connect them, Just say it briefly
- 11. What are the three elements of educational legal norms
- 12. What is the relationship between biotic and abiotic factors in ecosystem?
- 13. What are the rules of the periodic table of elements
- 14. Why do Thevenin's theorem and Norton's theorem have different zero setting methods for voltage source and current source when calculating equivalent resistance? one
- 15. The reason of error in the experiment of verifying the correctness of Thevenin's theorem and Norton's theorem May I ask why there may be errors when doing experiments to verify the correctness of Thevenin's theorem and Norton's theorem
- 16. By using Thevenin's theorem and Norton's theorem, the graphic circuit is transformed into an equivalent voltage source and an equivalent current source, and the solution of open circuit voltage uo and short circuit current is explained I understand,
- 17. Please explain the following questions with the knowledge of structural theory (1) In general, organic compounds have low melting and boiling point, low density, volatile and soluble in organic solvents (2) Under normal circumstances, the rate of organic matter participating in the reaction is small, and by-products are produced
- 18. Three people went to a hotel together. A room costs 30 yuan a night The next day when the check-out. 3 people a person out of 10 yuan. Raised 30 yuan to the boss After the boss collected the money, he said to the waiter: today's discount. Only 25 yuan So the boss took 5 yuan to the waiter and asked him to return it to the guest But the waiter was greedy. He deducted 2 yuan and gave back 1 yuan to the guest Here's the problem: Three people and one person took out 10 yuan. They took back 1 yuan. That is, one person took out 9 yuan Plus the 2 yuan deducted by the waiter. So it's 3 * 9 + 2 = 29 yuan Excuse me: where's 1 yuan left?
- 19. Macroeconomics topic selection and explanation If Bulge Bank has a required reserve ratio of 10 percent,loans of 25000dollars,deposits of 100000dollars,value cash of 10000dallars,and reserves at the Fed of 65000 dollars,then the bank a)has excess reserves of 55000 dollars b)has excess reserves of 75000 dollars c)has excess reserves of 65000 dollars a bank has 200dollars in checking deposits,800dollars in savings deposits,700dollars in time deposits,900 dollars in loans to businesses,300dollars in outstanding credit card balances,600dollars in government securities,10dollars in currency in its vault,and 20 dollars in deposits in its reserve account at the Fed.The bank's reserves are equal to A)630 B)620 C)10 D)20 E)30
- 20. Who can help me explain what the principle is? First, choose a number (0 - 7) to indicate the number of times you want to go out every week. Multiply this number by 2 [3], then add 5 [4], and then multiply by 50 [5]. If your birthday this year has passed, add 1757 to the number. If not, add 1758 [6] the last step, Use this number to subtract the year of your birth [7] and now you will have a three digit number [8]. The first digit is the number you choose at the beginning (that is, the number of times you want to go out every week). The next two digits are your age (birthday is one year old, birthday is empty year old)