MCQ
For electrons having principal quantum number are $3,$ the number of $(i)$ subshells and $(ii)$ orbitals would be respectively
- A$3$ and $5$
- B$3$ and $7$
- ✓$3$ and $9$
- D$2$ and $5$
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$PCl_5 \longrightarrow PCl_4^+ + Cl^-$