MCQ
Coinage metals are present in
- A$s-$ block
- ✓$d-$ block
- C$p-$ block
- D$f-$ block
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$(I)\, CO_3^{-2}$ $(II)\,XeF_4$
$ (III)\,I_3^- $ $(IV)\,NCl_3$
$(V)\,BeCl_2$