Question

How many orbitals are possible for n =4?

Answer 1

Your Answer ⇒ 16 
The total number of possible orbitals associated with the 4th energy level
For n = 4
Therefore the Number of orbitals = n²
= 4²
=16

Explanation :-
As we know that the Fourth shell has 4 subshell. 
Hence for each and every subshell, 

By using the formula  (2l+1)
For s  subshell ⇒  1 orbitals   {as l =0 }
For p subshell  ⇒ 3 orbitals    {as l = 1}
For  d subshell ⇒ 5 orbitals    {as l = 2}

For f  subshell  ⇒ 7 orbitals    {as l =3 }


Hence the total number of orbitals is 16 .

Hope it Helps..

Answer 2

Answer:

the answer is 16

Explanation:  N of orbital =n²   if n =4       n²=16