Question

3)Outer electronic configurations of some elements are given.Which is the Noble Gas?(The symbols are not real). A-2s2 2p2 B-3s2 C-3s2 3p6 D-3d2 4s2​

Answer 1

Explanation:

Electronic configurations of elements P, Q, R and S are given below. (These are not actual symbols).

P - 2,2

Q - 2,8,2

R - 2,8,5

S - 2,8

a) Which among these elements are included in the same period ?

b) Which are those included in the same group ?

c) Which among them is a noble gas ?

d) To which group and period does the element R belong ? I I hope it will help you

Answer 2

Answer:

C.

Explanation:

3s²3p⁶

valency is 8

Hope it is helpful to you!!!