How many protons neutrons and electrons in 58cr and 63cr?

Answer 1

Assuming that the questioner intended to write "Cr" instead of "cr", the isotopes indicated are those of the element chromium, whose atomic symbol is "Cr" and whose atomic number is 24. The atomic number is defined as the number of protons in a nucleus of each atom, and the Atomic Mass number, which precedes the atomic symbol, is defined as the number of protons and neutrons combined. In order to maintain electrical neutrality as is required for any atom, the number of electrons must be the same as the number of protons. From the definition of mass number, it follows that the number of neutrons is equal to the atomic mass number minus the atomic number. Therefore, each isotope named in the question has 24 protons and 24 electrons, but the isotope with mass number 58 has 32 neutrons and the isotope with mass number 63 has 32 neutrons has 39 neutrons.

Answer 2

Chromium-58 has: 24 protons, 24 electrons, 34 neutrons.
Chromium-63 has: 24 protons, 24 electrons, 39 neutrons.

Answer 3

Chromium-58 has: 24 protons, 24 electrons and 34 neutrons.
Chromium-58 has: 24 protons, 24 electrons and 39 neutrons.