Question

how many sub shell are associated with n=4?

Answer 1

there r three subs heel in n=4

Answer 2

HEY THERE!!!!!

Formulae for finding subshell  ( l ) = ( n-1 )

where l => Azimuthal quantum number  , n =>  principal quantum number

since n = 4 so l = 3  hence 3 subshells are associated with n=4

hope this helps you ;)