Subshells


 
 
Concept Explanation
 

Subshells

Subshells: It was found that shells have subshells. These subshells are termed as s,p,d and f. The maximum number of electrons that can go into these are 2,6,10 and 14 respectively.

The n number determines how many of the subshells make up the shell. For eg: The 1^s^t shell is made  up of 1 subshell, s. It can therefore contain only 2 electrons.The 2^n^d shell is made up of 2 subshells, s and p. It can therefore contains 2+6=8 electrons.

A complete table for first four shells looks like:

ShellSubshellTotal Number of Electrons in Shell
1^s^tShell1s2
2^n^dShell 2s,2p2+6=8
3^r^d Shell3s,3p,3d2+6+10=18
4^t^hShell4s,4p,4d,4f2+6+10+14=32
Sample Questions
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Question : 1

Maximum number of electrons in f - subshell is _________

Right Option : A
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Question : 2

How many electrons are present in subshell "d" ?

Right Option : D
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Explanation
Question : 3

How many subshells are present in first shell?

Right Option : A
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Explanation
 
 


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