# In the sixth period, the orbitals that are filled are :

Question:

In the sixth period, the orbitals that are filled are :

1. $6 s, 4 f, 5 d, 6 p$

2. $6 s, 5 d, 5 f, 6 p$

3. $6 s, 5 f, 6 d, 6 p$

4. $6 s, 6 p, 6 d, 6 f$

Correct Option: 1

Solution:

Thus, order of orbitals filled are

$6 s<4 f<5 d<6 p$