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Chemical Bonding And Molecular Structure

Question
CBSEENCH11005715

Differentiate between a covalent bond and co-ordinate bond.

Solution
Covalent Bond Co-ordinate Bond
1. This is formed by sharing of two electrons. Each atom supplies electron.
A. +. B → A:B.
1. One atom contributes an electron pair while the sharing is done by both atoms.
X : + Y → X : Y
2. Denoted by A - B 2. Denoted by Xδ+ → Yδ–
3. Formed between electron deficient atoms. 3. Formed between a donor with a lone pair and an acceptor  (electron pair deficient).
4. Formed between atoms. 4. Formed between molecules or between molecules and ions.