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How are covalent bonds represented in dot-and-cross diagrams?
Electrons from one atom are shown as dots.
Electrons from the other atom are shown as crosses.
How many electrons are shared in a single covalent bond?
Two electrons (one shared pair).
How many electrons are shared in a double covalent bond?
Four electrons (two shared pairs).
How many electrons are shared in a triple covalent bond?
Six electrons (three shared pairs).
What is a single covalent bond?
One shared pair of electrons between two atoms.