Question

The position of certain elements in the Periodic Table are shown below.

Period ↓	Group →
	1	2	3 to 12	13	14	15	16	17	18
1	G								H
2	A			I			B		C
3		D			E				F

Using the above table answer the following questions: 

(a) Which element will form only covalent compounds? 

(b) Which element is a non-metal with valency 2? 

(c) Which element is a metal with valency 2? 

(d) Out of H, C, F, which has largest atomic size? 

(e) Give name of family to which H, C and F belong?

Answer 1

(a) Element E will form only covalent bond because it has 4 valence electrons. 

(b) Element B is a non-metal with valency 2 because element B has 6 valence electrons so it can take only two electrons to complete its octet. 

(c) Element D is a metal with valency 2 because it has 2 valence electrons. 

(d) We know that atomic size increases from up to down in a group due to increment in number of shells. So F has largest atomic size.

(e) Noble gases is the name of family to which H, C and F belong.