Question

How many electrons can be held in a single orbital?

• A. $1$
• B. $2$
• C. $18$
• D. $8$

Answer 1

The correct option is B $2$

For a single orbital, the value of n, l and m are same. Thus only the value of $m_s$ can be varied. $m_s$ has value of $+1/2$ or $-1/2$. Thus single orbital can have only $2$ electrons at max.

Hence answer is option B.