Question

the total no. of orbital in 3rd energy level should be theoretically?​

Answer 1

Answer:

The first principal energy level contains only an s sublevel; therefore, it can hold a maximum of two electrons. ... The five d orbitals can hold up to 10 electrons. Thus, the third level holds a maximum of 18 electrons: 2 in the s orbital, 6 in the three p orbitals, and 10 in the five d orbitals.

Answer 2

Answer: 18

Explanation: the formula is 2s^2 i.e 2(3)^2

2(9)

18

Hope it helps