Source of negative charge in clay minerals is attributed to
- AIsomorphous substitution
- BCrystal imperfections and broken bonds
- CProton dissolution of exposed OH groups in basic environment
- DAll of theseCorrect
Solution
Concept
Origin of negative charge
Step-by-step solution
1. Negative charge arises from isomorphous substitution, broken bonds at edges and dissociation of OH groups.
Explanation
All three mechanisms contribute.
Why the other options are wrong
Any one is only a partial answer.
Shortcut
All of these.
Correct answer: D) All of these