Answer:
The first 20 elements of the periodic table :
1.H —Hydrogen
2.He—Helium
3.Li—Lithium
4.Be—Beryllium
5.B—Boron
6.C—Carbon
7.N—Nitrogen
8.O—Oxygen
9.F—Fluorine
10.Ne—Neon
11.Na—Sodium
12.Mg—Magnesium
13.Al—Aluminum
14.Si—Silicon
15.P—Phosphorus
16.S—Sulfur
17.Cl—Chlorine
18.Ar—Argon
19.K—Potassium
20.Ca—Calcium
The valency of first 20 elements is as follows :-
1. Hydrogen (H) = 1
2. Helium (He) = 0
3. Lithium (Li) = 1
4. Beryllium (Be) = 2
5. Boron (B) = 3
6. Carbon (C) = 4
7. Nitrogen (N) = 3
8. Oxygen (O) = 2
9. Fluorine (F) =1
10. Neon (Ne) = 0
11. Sodium (Na) = 1
12. Magnesium (Mg) = 2
13. Aluminium (Al) = 3
14. Silicon (Si) = 4
15. Phosphorus (P) = 3, 5
16. Sulphur (S) = 2
17. Chlorine (Cl) = 1
18. Argon (Ar) = 0
19. Potassium (K) = 1
20. Calcium (Ca) = 2
Explanation:
First 20 elements in the periodic table start with H and end with Ca. The quickest way to remember the number of valence electrons is to form a relationship with the number of the group the element is located in.
Answer:
It can be very difficult for citizens to start private businesses. Citizens must pay for most basic necessities by themselves. There is no guarantee of steady employment for many citizens. Citizens may pay higher taxes than in other economic systems.
Explanation:
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Answer:
<u>Diversify business operations and investments </u>
Explanation:
A merger refers to a corporate agreement between two firms agreeing to share resources and skills jointly or in a collaboration, with an objective of gaining a greater market share collectively.
Conglomerate merger refers to a form of merger agreement wherein, the two merging firms deal in completely unrelated products or services or operate in different industries.
The benefits such a merger yields are, increment in the market share, business diversification i.e dealing in new products and exploring new markets, cross selling of products and synergistic benefits.
Banker's draft can be used when the person making the payment wants money to be
available in the receiving bank's account.
<h3>What is bank draft?</h3>
Banker's draft is a a form of cheque that is given to a customer at the bank either for a purchase payment.
It can also be brought to another bank for remittance, it serves as evidence for transactions.
Therefore, a banker draft can be used when the person making the payment wants money to be
available in the receiving bank's account.
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How will goods or services be produced? is the basic basic economic question does this decision answer in a free market economy.
<h3>What is a Market economy?</h3>
In a market economy, firms and individuals interact to determine how much goods and services should cost and how to best allocate scarce resources. This word often refers to an economy that is more market oriented overall, however there may be some government intervention or central planning.
Classical economists like Adam Smith, David Ricardo, and Jean-Baptiste Say created the theoretical framework for market economies. These traditional liberal proponents of the free market thought that the "invisible hand" of the profit motive and market incentives typically led economic decisions in directions that were more productive and efficient than government economic planning.
Learn more about market economy
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