Question

Which shell would be the first to have 'g' subshell?

• A. $3^{rd}$
• B. $4^{th}$
• C. $5^{th}$
• D. $6^{th}$

Answer 1

The correct option is C $5^{th}$

For 'g' subshell, azimuthal quantum number '$l$' = 4.
We know that,
$l$, ranges from 0 to $n-1$ for a given principal quantum number '$n$'.
Hence the minimum possible value of of $n$ to have ‘g' subshell is $n=l+1=4+1=5$
Hence the correct option is c.