Question

What are the numbers of neutrons of the first 20 elements

Answer 1

Explanation:

Terms in this set (20)

Hydrogen, H. 1 proton, 1 electron, 0 neutrons.

Helium, He. 2 protons, 2 electrons, 2 neutrons.

Lithium, Li. 3 protons, 3 electrons, 4 neutrons.

Beryllium, Be. 4 protons, 4 electrons, 5 neutrons.

Boron, B. 5 protons, 5 electrons, 6 neutrons.

Carbon, C. 6 protons, 6 electrons, 6 neutrons.

Nitrogen, N. ...

Oxygen, O.

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Answer 2

Explanation:

Hydrogen = 0 neutrons

Helium = 2 neutron

lithium=4 neutron

beryllium=5 neutron

boron = 6 neutron

carbon = 6neutron

nitrogen=7n

oxygen= 8n

fluorine= 10n

neon= 10n

sodium= 12n

magnesium= 12n

aluminum = 14 n

silicon= 14n

phosphorus= 16n

sulphur= 16n

chlorine= 18 n

argon= 22 n

potassium= 20n

calcium= 20n

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