# The total number of atomic orbitals in fourth energy level of an atom is:  Option 1) 8 Option 2) 16 Option 3) 32 Option 4) 4

D Divya Saini

As learnt in

Azimuthal Quantum Number(l) -

For a given value of n, l can have n values ranging from 0 to n – 1, that is, for a given value of n, the possible value of l are : l = 0, 1, 2, ....( n –1)

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$\therefore$ for n = 4, l = 0, 1, 2, 3

$\therefore$ we have s, p, d & f orbitals

Total orbitals = $1+3+5+7$

= $16$

Option 1)

8

This solution is incorrect

Option 2)

16

This solution is correct

Option 3)

32

This solution is incorrect

Option 4)

4

This solution is incorrect

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