Once formed, how are coordinate covalent bonds different from other covalent bonds?
a. they are stronger.
c. they are weaker.
b. they are more ionic in character.
d. there is no difference.

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d. There is no difference.

Explanation: -

Coordinate covalent bonds also called dative bonds, occurs when both the electrons in a bond come from the same atom.

However just like the covalent bond,it is also now shared after forming.

Thus after forming, the coordinate covalent bonds are no different from other covalent bonds since they too are now getting shared.