Question

Match the atomic number 4 , 6 ,11 , 15 and 18 with each of the following : [5]

(i) A solid non metal of valency 3.

(ii) A gas belonging to zero group.

(iii) An element with 2 electrons in the valence shell.

(iv) A non – metal of valency 4.

(v) A metal with one electron in the third shell.​

Answer 1

Explanation:

i - 15

ii - 18

iii - 4

iv - 6

v- 11

Answer 2

Answer:

4 has 2 positive charge mean 2 electrons

6 has 4 negative charge

11 has 1 positive charge

15 has 3 negative charge

18 has 2 positive charge