Concept Used:
The notation 3d indicates the principal energy level and the type of subshell.
Step 1: Principal quantum number (n)
For a 3d orbital:
n = 3
Step 2: Azimuthal quantum number (l)
For a d-orbital:
l = 2
Step 3: Magnetic quantum number (ml)
For l = 2, possible values of ml range from −l to +l:
ml = −2, −1, 0, +1, +2
Final Answer:
Possible quantum numbers for an electron in a 3d orbital are:
n = 3,
l = 2,
ml = −2, −1, 0, +1, +2
Considering Bohr’s atomic model for hydrogen atom :
(A) the energy of H atom in ground state is same as energy of He+ ion in its first excited state.
(B) the energy of H atom in ground state is same as that for Li++ ion in its second excited state.
(C) the energy of H atom in its ground state is same as that of He+ ion for its ground state.
(D) the energy of He+ ion in its first excited state is same as that for Li++ ion in its ground state.