Answer:
5
Explanation:
The maximum numbers of d orbitals are 5. These are named as dz², dxy, dyz, dzx, dx² - y².
The number of maximum electrons accommodate in d orbitals are,
l = 2
2 ( 2(2) + 1)
2( 4 + 1)
10
so maximum electrons in d subshell are 10.
The 1st and second energy level do not have d orbitals. Third energy level in addition to s and p orbitals contain d orbitals.
Energy level sublevel N of orbitals No of electrons
1 s 1 2
2 s 1 2
p 3 6 (total=8)
3 s 1 2
p 3 6
d 5 10 (total=18)
