Question

a. I’m the number of the protons in the nucleus of an atom (who am I)


6. What’s true about mass number (select one)
a. It’s the number of protons
b. It’s the sum of protons and electrons
c. It’s the sum of protons and neutron
d. It’s the sum of all particles in an atom

FAST PLZZ

Answer 1

Answer:

c. It's number of protons and neutrons.

Explanation:

An atom's mass is highly concentrated at its nucleus. So imagine if you take away the electrons from an atom it will not make any big difference in its mass.

And nucleus contains protons and neutrons.

Mass of this two determines the mass of an atom.