Question

Can anyone help find the answer and explain simple way...

Answer 1

Answer:

Concept: Formation of compounds by transfer of electrons results in Ionic Bonds. Ionic Bond is formed only when the valence number of electrons is present is close to achieving the octet structure.

In the above case, the given options are:

Li = 3,  C = 6, N = 7, O = 8

Here Electronic Configuration would be:

Li = 2,1

C = 2, 4

N = 2, 5

O = 2, 6

Here Li and O are close in achieving octet as they either give electrons or accept less number of electrons to form a bond.

Hence Li and O combine to form Li₂O which is the right answer.

Hope it helped !!

Answer 2

correct answer is c) Li2O
One simple way to understand this is that - Only metal and non metals form the compounds by transfer of electrons (which are called the ionic compounds).In this way you can easily remember and give the correct answer by checking which compound has metal - non metal combination.