Question

When oxygen gains 2 electrons it forms a -2 charge explain why

Answer 1

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Step-by-step explanation:

Oxygen has 6 valence electrons. To fill up the valence shell, which (when in oxygen's row) has 8 electrons, an oxygen atom wants to gain 2 electrons. Since every electron has a single negative charge, the addition of two electrons results in an oxygen ion with a charge of −2

Oxygen is in group 6 of the periodic table meaning it has 6 electrons on its outer shell so when Oxygen atom gains two electrons it results in an Oxygen Ion with a charge of -2

Answer 2

it forms an anion by developing 2 negative charges over it as there are 2 electrons more than the number of protons in the ion.

Step-by-step explanation: