The number of electronic shells contained in an atom with electron configuration 1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^6\)4S\(^2\) is
3
2
4
5
Explanation
Video Explanation
Post your Contribution
Discussions (14)
Here is an explanation:
add up d number of electrons[2+2+6+2+6+2]=20
Distribute d electrons in d shells E.C.=2,8,8,2[K,L,M,N]=4Shells.
seriously I don't know about you guys but I will always total the electrons and use KLMN instead of SPDF
20 electrons = 2,8,8,2 = 4 shells
Here also is anexplanation
The firstshell accommodates two electrons, thesecond can carry eight, the third also accommodates eight
Here is an explanation:
just add d numbas on top wich will giv u 20 then rewrite in d old electronic configuration way(d one posted is d modern 1) wich will be 2.8.8.4 since each no represents a shell,dat makes it 4 shell.
