Question

How many orbitals are possible for $n=5,m_s=-1/2$ ?

• A. $25$
• B. $30$
• C. $50$
• D. $35$

Answer 1

Answer: (A)

According to $\left(n+l\right)$ rule
$n=5$
$5s\to 1$ (orbital)
$5p\to 3$
$5d\to 5$
$5f\to 7$
$5g\to 9$
$\Rightarrow 5h$ not possible