Question

If two subshells have equal value of (n+1) and one of them has n=4, l=3, while second subshell has dumbbellshape. Then which of the bfollowing statement is/are correct?

• A. Second subshell has value of n = 6.
• B. One of the orbitals of second subshell has one nodal plane.
• C. Second subshell is d-subshell.
• D. First subshell is f-subshell.

Answer 1

Answer: (A), (D)

The correct options are
A Second subshell has value of n = 6.
D First subshell is f-subshell.

For first subshell,

$n=4$

$l=3$

$m_l=-3,-2,-1,0,+1,+2,+3S=+\frac{1}{2},-\frac{1}{2}$

for all $m_l$ value.

According to value of $l$ it is $f$ subshell.

The shape of orbital in the second subshell is dumbbell shape. Thus the second subshell must be p-subshell for which $l=1$. Thus value of $n=6$ as value of $(n+l)$ for first subshell is equal to the value of $(n+l)$ for the second subshell.