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You are watching: How many protons does beryllium have

Beryllium has actually an atomic variety of 4 and also an atomic mass that 9. Every atom is composed of neutrons, protons and electrons. The variety of each of this sub-atomic particles can be calculate by discovering the atomic number and atomic fixed of the element. Each atom has an same number of...

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Beryllium has an atomic number of 4 and also an atomic mass the 9. Every atom is composed of neutrons, protons and also electrons. The variety of each of these sub-atomic particles can be calculate by knowing the atom number and also atomic mass of the element. Each atom includes an equal variety of protons and also electrons, thus offering it v a neutral charge. The mass of one atom is added by masses that protons and also neutrons, electrons are taken into consideration comparatively massless.

Thus, atom number = number of protons = variety of electrons

And, atom mass = number of protons + number of neutrons

Here, the atom number is 4, therefore beryllium consists of 4 electrons and 4 protons. Since, the atomic mass is 9, the variety of neutrons is equal to 5 (= 9 - 4).

Hope this helps.

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