What is the atomic number of a chemical element?
The number of neutrons in the atom's nucleus
The number of atoms
The number of protons in the atomic nucleus
The number of electrons in the atomic nucleus
The atomic number or proton number of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus. The atomic number uniquely identifies a chemical element.
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Answers by country
The number of neutrons in the atom's nucleus
The number of atoms
The number of protons in the atomic nucleus
The number of electrons in the atomic nucleus
answers
Switzerland
10
the Netherlands
21
Malaysia
10
Australia
42
Pakistan
32
Nigeria
50
Greece
14
the United States
175
India
302
the United Kingdom
82
Germany
201
Austria
34
Poland
2744
the Philippines
26