# How can you tell if an element or compound is a lewis acid or lewis base?

Mar 26, 2018

Just to retire this question....$\text{how else but by experiment?}$

#### Explanation:

Chemistry is an experimental science. Theories and rules are all very well, but they all rely on, and try to interpret the results that chemists observe when they add reagent A to reagent B under a given set of conditions....

You know the definition of $\text{Lewis acidity}$, and of $\text{Lewis Basicity}$....you have to hit the texts to comprehend and apply them....