Question

Element X in the 16th group have 3 shells a.write the subshell electronic configuration of the element X b.Element X belongs to which period C.Element belongs to which group and block​

Answer 1

Explanation:

Three shells are K,L,M. The subshells are 1s,2s,2p,3s,2p,3d

Group number: 17

Electrons in last shell: 7

Shell electronic configuration 2,8,7

Sub-shell electronic configuration 1s

2

,2s

2

,2p

6

,3s

2

,3p

5