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Orbital

Orbital: The space around the nucleus in which probability of finding the electron is maximum is called orbital.


Shape is orbital

For S subshell

 l=0, m=0 

There is only one possible orbital this means that probability of finding the electron is same in all direction so all s orbital are sperical in shape but size of s orbital increase as principal quantum number increase. 



 The gap in 2s or 3s is called nodal space

 This may be notice that inside the 2s and 3s orbital there is a finding the electron is zero that space is called nodal space. 


 Number of space in an s -orbital =(n-1) 
where n is principal quantum number. 




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