Is lone pair not considered in presence of double bond?

Answer 1

Is lone pair not considered in presence of double bond?

Not sure what context "not considered" means in the question.

However, there are lots of examples in organic chemistry that have both double bonds and lone pairs.

The carbonyl group of aldehydes, ketones, and carboxylic acids is a classic example. The oxygen atom is doubly bonded to a carbon, and has 2 lone pairs that are useful for reactions or hydrogen bonding.

Answer 2

No, or at least no if I understand what you are asking. It sounds like that you want to know if in a chemical bond, if there are lone pairs of electrons not bound to anything, then would it be considered a double bond. Of course not. A double bond is a bond between two molecules where both molecules share all 4 outer electrons where 2 come from one molecule and the other 2 come from the other molecule.