Question

The atomic number of magnesium is 12. This means that its nucleus must contain A. 6 protons and 6 neutrons B. 6 neutrons and 6 electrons C. 12 neutrons and no protons D. 12 protons and no electrons

Answer 1

hey mate

here is your answer

the atomic number of an element is the number of protons present in the nuclues of the atom of an element.

thus,it means that 12 protons are there in the nuclues.

thus, option c)-is correct.

✨✨✨✨ ALWAYS BE BRAINLY ✨✨✨✨

Answer 2

Atomic number can be defined as the number of protons in a nucleus of an atom.

Thus, here an element with atomic number 12 clearly means there are 12 protons present in the nucleus of it.

As number of neutrons present in atomic nucleus and number of electrons doesn't effect the atomic number; the correct option should be

12 protons(not related to number of neutrons or electrons).