Predict the position of an element has the electronic configuration 1 s2 2 s2 2 p6 3 s2 3 p6 3 d5 4 s1.

Question

Predict the position of an element has the electronic configuration 1 s2 2 s2 2 p6 3 s2 3 p6 3 d5 4 s1. (A) Period 4, group 6 (B) Period 6, group 4 (C) Period 3, group 1 (D) Period 4, group 5

Tardigrade Admin · Accepted Answer

As n=4, hence element lies in 4 text th period. Group number =n s+(n-1) d=1+5=6 So, the given element position is period 4 and group 6.

Q. Predict the position of an element has the electronic configuration $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{1}$ .

Period 4, group 6

Period 6, group 4

Period 3, group 1

Period 4, group 5

As $n = 4$ , hence element lies in $4^{th}$ period.
Group number $= n s + (n - 1) d = 1 + 5 = 6$
So, the given element position is period $4$ and group $6$ .

Q. Predict the position of an element has the electronic configuration 1s22s22p63s23p63d54s1.