# You asked: How many electrons are shared in an oxygen molecule?

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## Does oxygen have 8 or 10 electrons?

In an oxygen atom, there are 8 protons and 8 electrons. Most oxygen atoms also have 8 neutrons, but it is possible for an oxygen atom to have 9 or 10 neutrons. They are just rarer. The oxygen we breathe is not in atomic form.

## How is atomic mass calculated?

Together, the number of protons and the number of neutrons determine an element’s mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

## What is O2 ion?

Oxide(2-) is a monoatomic oxygen. Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.

## Why does O2 have 16 electrons?

Explanation: Oxygen has an atomic number of 8 , and the mass number of an atom is the sum of its atomic number plus its neutron number. We got the mass as 16 units, and so it’ll have 16−8=8 neutrons.

## How many electrons does oxygen lose?

An oxygen molecule is O2. Each oxygen atom has 8 electrons, so there are 16 electrons in an oxygen molecule. Valence electrons of silicon are 8. Thus to complete its octate it either needs to loose 4 elctrons or gain 4 electrons, but this requires high amount of energy/heat.

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