How many protons, neutrons and electrons does a hydrogen molecule consist of?

| August 14, 2021 | education

Hydrogen is the lightest element. In the periodic table of chemical elements of Mendeleev, it occupies the first cell. The hydrogen atom has number one, and as is known from the theory of atomic structure, the ordinal number in the periodic table corresponds to the number of electrons in the ground state of the atom. Also from the theory of the structure of the atom, we remember that the number of protons (positively charged particles of the nucleus) is equal to the number of electrons. The number of protons and neutrons combined corresponds to the relative atomic weight.

The atomic mass of the most abundant isotope of hydrogen (protium) is equal to unity, which means that the nucleus consists of only one proton.

We get the following composition for one atom: 1 electron, 1 proton and 0 neutrons.

There are two atoms in a hydrogen molecule, which means the number of elementary particles doubles: 2 electrons, 2 protons and 0 neutrons.

If we consider a deuterium molecule, then it will contain 2 electrons, 2 protons and 2 neutrons. A tritium molecule will have 2 electrons, 2 protons and 4 neutrons.



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