Question

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Answer 1

The valency of oxygen is 2, because it needs two atoms of hydrogen to form water.

What is the Valency of Carbon? The valency of carbon is four and one atom of carbon can make four covalent bonds.

The valency of aluminium is 3 instead of 5 because the energy required to remove 3 electrons from the outermost shell is less than the energy required to add 5 electrons

Neon valency 0

The electronic configuration of potassium is 2,8,8,1. The valence shell contains 1 electron therefore the valency of potassium is 1.

Answer 2

Answer:

1. OXYGEN - K L. M. N

2. 6 -. -

SO, THE VALENCY OF OXYGEN IS 2

2.CARBON - 2. 4 -. -

SO , VALENCY - 4

3 ALUMINIUM - 2 , 8 , 3 , -

SO, VALENCY - 3

4 NEON - 2 , 8 , - , -

SO, VALENCY - 0

5 POTTASIUM - 2 , 8 , 8 , 1

SO, VALENCY - 1

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