Question

. The atomic number of an element'is 16. Predict

(i) the number of valence electrons in its atom

(ii) its valency

(iii) its group number

(iv) whether it is a metal or a non-metal

(v) the nature of oxide formed by it

(vi) the formula of its chloride

Answer 1

(i) no. of valence electrons =6
(ii) valency =2
(iii) group no. =16
(iv) it is a non metal
(v) acidic
(Vi) XCl2 (where x is the element)

Answer 2

According to the circumstances mentioned in the question,

The atomic number of an element is 16.

So,

1) Number of the valence electrons are 6.

2) It's valency is 2

3) It's group number in the periodic table is 16.

4)It is a non-metal.

5) It's oxide is acidic.

6) Formula of it's chloride is xCl2 ,whrere x is this atom.