D all of these
Explanation:cus ik
I believe the answer is b.
Don’t listen to that link it’s a virus
Answer:
27
Explanation:
The number of protons in atom is the atomic number. For a neutral atom that has not lost or gained any electron, it is the same as the number of electrons.
The atomic number is used in perfect ordering of the periodic table and it is the basis of the periodic law.
Protons are positively charged subatomic particles that reside in the in the nucleus of an atom with the neutrons.
Answer:
Add them!
Explanation:
The mass number of an atom is its total number of protons and neutrons