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

1.	The position of certain elements in the Periodic Table are shown below.Period ↓Group →123 to 121314151617181GH2AIBC3DEFUsing 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» (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.

The position of certain elements in the Periodic Table are shown below.Period ↓Group →123 to 121314151617181GH2AIBC3DEFUsing 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»

(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.

(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.