Question

The table shows the electronic structures of four elements. Element Electronic Structure
P 2,6
Q 2,8,1
R 2,8,7
S 2,8,8
a) Which element will form cation?
b) Which element will be neutral/inert?
c) Mention group and period for element R?

Answer 1

1) Identify which element(s) will form covalent bonds with carbon.

Answer -

1) P and R will form covalent bonds with carbon, because covalent bonds are formed by non metals, and electronic configuration of P and R shows they are non metals and rest looks like metals.

Question -

2) "Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.

Answer -

2) Carbon shows two properties -

Catenation - Ability to form bonds with other atoms of carbon and give rise to large molecules.

Tetravalency - Valency of carbon is 4, it has an ability of bonding with four other atoms of carbon or atoms of some other monovalent element.