Why is most of the mass of an atom in the nucleus? O A. The nucleus contains electrons, neutrons, and protons.
B. The nucleus contains both protons and neutrons.
C. The nucleus contains both protons and electrons.
D. The nucleus contains only neutrons.
SUBMIT

The nucleus contains electrons , neutrons and protons

Explanation:

I hope it will help u dear

your answer will be : B. The nucleus contains both protons and neutrons.

because, electrons has very less / negligible mass as compared to protons and neutrons, so whole mass of atom is considered to be in nucleus, since it consists of neutrons and protons.

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying