Question

Which one of the following is an incorrect orbital notation?

• A. $2\mathrm{s}$
• B. $4{\mathrm{d}}_{\mathrm{xy}}$
• C. $3\mathrm{f}$
• D. $4\mathrm{s}$

Answer 1

The correct option is C

$3\mathrm{f}$

Explanation for the correct option:

(c ) $3\mathrm{f}$

• For $\mathrm{n}=3$, the maximum is $3\mathrm{d}$.
• As a result, $3\mathrm{f}$ cannot be created.
• Hence this option is correct

Explanation for the incorrect options:

(a) $2\mathrm{s}$

• For $\mathrm{n}=2$, the maximum is $2\mathrm{l}$.
• As a result, $2\mathrm{s}$ can be created.
• Hence this option is not correct

(b)$4{\mathrm{d}}_{\mathrm{xy}}$

• For $\mathrm{n}=4$, the maximum is $4\mathrm{f}$.
• As a result, $4{\mathrm{d}}_{\mathrm{xy}}$ can be created.
• Hence this option is not correct

(d) $4\mathrm{s}$

• For $\mathrm{n}=4$, the maximum is $4\mathrm{f}$.
• As a result, $4\mathrm{s}$ can be created.
• Hence this option is not correct

Hence the correct option is (c ) $3\mathrm{f}$