The principal quantum number of the first d orbital is __________.
Question 27 options:
a) 1
b) 2
c) 3
d) 4
e) 5
is the answer b) ?
No, the answer is not b) 2. The correct answer is c) 3.
To determine the principal quantum number of the first d orbital, we need to understand the electronic configuration of the d orbitals.
The electronic configuration for the d orbitals is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹.
The principal quantum number (n) represents the energy level or shell in which an electron resides. In this case, the first d orbital is located in the 3rd shell or energy level.
Thus, the correct answer is c) 3.