MCQ
Co-ordinate bond is absent in
- A$B{H_4}$
- ✓$CO_3^{ - 2}$
- C${H_3}{O^ + }$
- D$N{H_4}^ \oplus $
✓
Answer
Correct option: B.
$CO_3^{ - 2}$
(b) $^ - O\mathop { - \mathop C\limits^| = }\limits^{\,\,{O^ - }} O$ has covalent bonds only.
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