Q. Which of the following does not contain coordinate bond?
A) $BH_{4}^{-}$
B) $NH_{4}^{+}$
C) $CO_{3}^{2 -}$
D) $H_{3}O^{+}$
Explanation
(c)
$CO_{3}^{2 -}$ has the following structure
[image:4_image151.emf]
It contains only covalent bonds
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.