Question

s-subshell can accommodate a maximum of ______ electrons.

• A. four
• B. six
• C. two
• D. ten

Answer 1

The correct option is C two

The maximum number of electrons a subshell can accommodate is given by $2\times \text{(2}l\text{+1)}$
where $l$ represents angular momentum quantum number.
The value of $l$ for s-subshell is 0.
For value of $l$ = 0, maximum number of electrons = $2\times \text{(2}l\text{+1)}$
= $2\times \text{(2 (0) +1)}$
= $\text{2}$