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

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.

Explanation:

See explanation

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

i think its

this is poiselle's equation from fluid mechanic in physics. mech eng