Question

Pls help me to find out the answer.
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Answer 1

Answer:

A curved arrow with two "hooks" on the end indicated movement of a pair of electrons. A curved arrow with one "hook" indicated movement of one electron. Double-headed arrows are used to represent equivalence between resonance structures.

Explanation:

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Answer 2

Answer:

single arrow represents strong acid or base reaction

double arrow represents we represents weak acid or bases reaction