During $S_{N} 1$ reactions, the leaving group leaves the molecule before the incoming group is attached to the molecule

True

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False

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Solution

The correct option is A True
In $S_{N} 1$ , first the ionisation of $R X$ takes place. which means the leaving group leaves the molecule before the attack of $N u^{-}$
Mechanism:
An example of a reaction taking place with an $S_{N} 1$ reaction mechanism is the hydrolysis of tert-butyl bromide with water forming tert-butanol:

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