Question

1
The sum of number of protons and number of
neutrons present in the nucleus of an atom is
called its
(i) mass number (ii) atomic number
(iii) number of electrons (iv) all of the above​

Answer 1

Answer:

Mass number

Explanation:

Mass number is the sum of protons and neutrons in an atom

pls mark brainliest

Answer 2

Answer:

i think iii) number of electrons