Question

Match the List - I with List - II and select the correct set from the following sets given below:
$\begin{array}{cccc}& \text{List - I}& & \text{List - II}\\ \text{(A)}& \text{The number of subshells in an}& \text{(1)}& n^2\\ & \text{energy level}& & \\ \text{(B)}& \text{The number orbitals in a}& \text{(2)}& 3d\\ & \text{shell}& & \\ \text{(C)}& \text{The number of orbitals in a subshell}& \text{(3)}& 2l+1\\ \text{(D)}& n=3,l=2& \text{(4)}& n\end{array}$

• A. $\begin{array}{ccccc}\text{Sets}& \text{(A)}& \text{(B)}& \text{(C)}& \text{(D)}\\ \text{(a)}& 4& 1& 3& 2\end{array}$
• B. $\begin{array}{ccccc}\text{Sets}& \text{(A)}& \text{(B)}& \text{(C)}& \text{(D)}\\ \text{(b)}& 3& 1& 4& 2\end{array}$
• C. $\begin{array}{ccccc}\text{Sets}& \text{(A)}& \text{(B)}& \text{(C)}& \text{(D)}\\ \text{(c)}& 1& 4& 3& 2\end{array}$
• D. $\begin{array}{ccccc}\text{Sets}& \text{(A)}& \text{(B)}& \text{(C)}& \text{(D)}\\ \text{(d)}& 3& 4& 1& 2\end{array}$

Answer 1

The correct option is A $\begin{array}{ccccc}\text{Sets}& \text{(A)}& \text{(B)}& \text{(C)}& \text{(D)}\\ \text{(a)}& 4& 1& 3& 2\end{array}$

Number of orbitals in a shell $=n^2$
Number of subshells in a shell $=n$
Number of orbitals in a subshell $=(2l+1)$
$n=3,l=2$ represents $3d$