How do you find how many electrons are in a atom?

To determine how many total electrons there are, add the amount of charge to the atomic number. In this case, there are fewer protons than electrons. For example, N 3- has a -3 charge which means it has 3 more electrons than a neutral nitrogen atom. Nitrogen’s atomic number is 7, therefore this ion has 10 electrons.

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Explanation:

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock