# How do you determine a nucleophile or a base?

Apr 22, 2018

see explanation

#### Explanation:

To determine a nucleophile look after a charged molecule $\left(O {H}^{-} , {O}^{-}\right)$. These can not donate an electron pair to protons but to any other atoms. A reaction could look like:

![https://d2jmvrsizmvf4x.cloudfront.net/LxA2jZ4uRaOYg5gNtBM6_nu.JPG)

A base donates a pair of electrons to a proton. These are typically molecules with lone pairs. A reaction like this could look like:

![https://d2jmvrsizmvf4x.cloudfront.net/NaHa86GCT6yhnJ59YWKn_base.JPG)