MCQ
Number of compounds with one lone pair of electrons on central atom amongst following is__________ $\mathrm{O}_3, \mathrm{H}_2 \mathrm{O}, \mathrm{SF}_4, \mathrm{ClF}_3, \mathrm{NH}_3, \mathrm{BrF}_5, \mathrm{XeF}_4$
- ✓$4$
- B$12$
- C$56$
- D$78$

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