Two carbon atoms held together in a double covalent bond share how many electron?

1 Answer
Sep 1, 2016

A C=C bond is composed of 4 electrons.

Explanation:

Consider ethylene, H2C=CH2. Each hydrogen atom has the one electron available for bonding. Each carbon atom has 4 electrons available for bonding. (The remaining electrons C,Z=6 are inner core, and are not presumed to be involved in bonding.)

So in a olefin bond C:+:C gives the C=C junction.