Which of the following contains a coordinate | vedclass

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(A) coordinate covalent bond (or dative bond) is formed when one atom donates a lone pair of electrons to another atom that is electron-deficient.In $

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$N_2H_5^+$

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(A) coordinate covalent bond (or dative bond) is formed when one atom donates a lone pair of electrons to another atom that is electron-deficient.In $N_2H_5^+$,the structure is formed by the protonation of hydrazine $(N_2H_4)$.$N_2H_4$ has a lone pair of electrons on the nitrogen atom. When it reacts with an $H^+$ ion,the nitrogen atom donates its lone pair to the $H^+$ ion to form a coordinate bond.$N_2H_4 + H^+ \rightarrow [H_2N-NH_3]^+$ or $N_2H_5^+$.In $BaCl_2$,the bond is ionic. In $HCl$ and $H_2O$,the bonds are purely covalent.

Which of the following contains a coordinate covalent bond?

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