Why a lithium atom forms a + 1 ion and an oxygen atom forms -2 ion? Please really urgent thanks

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asked Aug 22, 2018 171k views

1 Answer

Paiv · Answer 1 · 2018-08-27T21:06:04+0000

Lithium forms a +1 ion because it loses one electron, making the ratio of electrons:protons unbalanced by losing one electron. the ratio is now 2e:3p.

Oxygen forms a -2 ion because of a different reason. It gains 2 electrons rather than losing them.

Why a lithium atom forms a + 1 ion and an oxygen atom forms -2 ion? Please really urgent thanks

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