An electrically neutral atom of oxygen has eight electrons. what other facts do you know for sure about this atom? there are eight neutrons in the nucleus. there are eight protons. there is a charge of +8 on an atom of beryllium. there is a charge of 8 on an atom of beryllium.

There are eight protons.

Explanation:

Mass number is the sum of total number of protons and neutrons present in the nucleus of an atom.

On the other hand, atomic number is only the total number of protons present in an atom.

Also, when an atom is electrically neutral in nature then its number of protons equal to the number of electrons present in it.

An electrically neutral atom of oxygen has 8 electrons and 8 protons. It can have any number of neutrons depending on the isotope of oxygen.

Thus, we can conclude that an electrically neutral atom of oxygen that has eight electrons will also have 8 protons.

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