MCQ
Which has permanent dipole moment ?
- A$CO_3^{-2}$
- B$SO_4^{-2}$
- C$CS_2$
- ✓$NH_3$

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$(I)\, CO^{2-}_3$ $(II)\, XeF_4$ $(III)\, I^-_3$ $(IV)\, NCl_3$ $(V)$ $BeCl_2$