Question

1s2 , 2s2, 2p6, 3s2, 3p6 is the electronic configuration of an element X. from which shell election first removed
A) 1
B) 2
C) 3
D) any shell
please answer this question... please... don't spam.. ​

Answer 1

Answer:

A number of electrons present in valence shell of penultimate Shell represents the group of elements.

For s block elements: no.of group=number of valence shell electron.

p block elements: no. of group= 2 + 10 + number of valence electrons.

d block elements: no. of group= number(n-1)d electrons + number of electrons in nth shell.

Here, the differential electron is in p orbital hence, it belongs to p block

No. of group= 2+ 10 + 3=15 i.e 15th group or VA group.

I hope this will help you

Answer 2

Explanation:

hffhhjjkyu rkbnkk jdgth