Question

8.
On the basis of electronic configuration of 9x5, the group number and
period of the element 'X' is :​

Answer 1

Question-

On the basis of electronic configuration of ,9X5, the group and period of the element X' is:

(a) Group 15 period 2

(b) Group 18 period 2

(c) Group 9 period 5

(d) Group 13 period 5

Answer - Period X belongs to (c) Group 9 period 5

Periodic table is table for arranging all the elements in the series of atomic number.

It has 18 groups and 5 periods. It has metals, non metals, metalloids and transition elements placed in a manner.

Therefore, the 9x5 will represent group number 9 and period 5. The group 9 elements are halogens with valency of 1.

This states that they require only one electron to complete their octet.

The element being talked about in question is iodine.

Answer 2

Answer:

the answer is 13 group and 2nd period

electronic configuration- 5 = 2,3

so 2 shells - 2nd period

and 10+3 = 13th group