Question

The atomic number of magnesium is 12. 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

I think its b but im not sure

Answer 2

thank you

Answer 3

No problem

Answer 4

Can i get a medal

Answer 5

ya

Answer 6

Thanks ʕ•ᴥ•ʔ

Answer 7

np

Answer 8

None of those are correct... Magnesium has 12 protons, and as such must have 12 neutrons in a non-ionized state. The number of neutrons isn't fixed. Are you sure this question is written properly? (Plus this goes in Chemistry.)

Answer 9

The atomic number of an element tells us the number of protons \(in~ the~ nucleus\).
The number of electrons equals the number of protons if the element is not ionized, and they lie outside the nucleus. The number of neutrons is not fixed, giving rise to isotopes.

In the future, please post chemistry questions in the chemistry section, and so on. This way, all responses/discussions will be within the same post in the appropriate section instead of being buried in various sections. As well, this way your post will benefit from peer review by the appropriate helpers.