The nucleus of an atom of cobalt-58 contains (1) 27 protons and 31 neutrons (2) 27 protons and 32 neutrons (3) 59 protons and 60 neutrons (4) 60 protons and 60 neutrons

Question

Chemistry

Turner Blair

7 March, 07:23

The nucleus of an atom of cobalt-58 contains (1) 27 protons and 31 neutrons (2) 27 protons and 32 neutrons (3) 59 protons and 60 neutrons (4) 60 protons and 60 neutrons

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Answers (1)

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Jaelyn · Answer 1

The number next to cobalt (58) represents the atomic mass.

The atomic mass consists of protons and neutrons.

We know that the atomic number = # of protons.

- Look at a periodic table to find Cobalt's atomic number which is 27, meaning there are 27 protons.

-To find the number of neutrons, take 58-27 = 31 neutrons.

Therefore the answer is (1) 27 Protons and 31 Neutrons