Question

how does O form anion​

Answer 1

Answer:

What is an anion? An anion has more electrons than protons, consequently giving it a net negative charge. ... The number of electrons gained, and so the charge of the ion, is indicated after the chemical symbol, e.g. chlorine (Cl) gains one electron to become Cl-, whilst oxygen (O) gains two electrons to become O2-.

Answer 2

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What is an anion?

An anion has more electrons than protons, consequently giving it a net negative charge. The number of electrons gained, and so the charge of the ion, is indicated after the chemical symbol, e.g. chlorine (Cl) gains one electron to become Cl-, whilst oxygen (O) gains two electrons to become O2-.

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