Correct statements for an element with atomic number 9 are A. There can be 5 electrons for which m_s=+1/2 and 4 electrons for which m_s=-1/2 B. There…

Correct statements for an element with atomic number $\displaystyle 9$ are A. There can be $\displaystyle 5$ electrons for which $\displaystyle m_s=+\frac{1}{2}$ and $\displaystyle 4$ electrons for which $\displaystyle m_s=-\frac{1}{2}$ B. There is only one electron in $\displaystyle \mathrm{p}_{\mathrm{z}}$ orbital. C. The last electron goes to orbital with $\displaystyle n=2$ and $\displaystyle l=1$. D. The sum of angular nodes of all the atomic orbitals is 1. Choose the correct answer from the options given below: