Question

A maximum number of electrons in a subshell of an atom determined by the formula:

• A. $4l+2$
• B. $2n^2$
• C. $4l-2$
• D. $2l+1$

Answer 1

Answer: (A)

$4l+2$

Maximum no. of electrons in a sub-shell is $4l+2$, where $l$ is the azimuthal quantum number.

For $s$ subshell, no of electrons are $4\times 0+2=2$.

For $p$ subshell, no of electrons are $4\times 1+2=6$.