MCQ
Which given statement is wrong ?
- AHydrated $CuSO_4$ shows ionic, covalent, coordinate and $H-$ bond
- B$NO_3^-$ shows covalent and coordinate bonds
- ✓$K_4[Fe(CN)_6]$ shows only ionic and coordinate bonds
- DAnion of $K_2CO_3$ shows resonance
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$(I)$ Number of $S-S$ bonds in $H_2S_nO_6$ are $(n + 1)$
$(II)$ When $F_2$ reacts with water gives $HF, O_2$ and $O_3$
$(III)$ $LiNO_3$ and $BaCl_2$ compounds are used in fire works
$(IV)$ $Be$ and $Mg$ hydrides are ionic and polymeric

