Question

PLEASE HELP! AWARDING BRAINLIEST!

Answer 1

An atom is represented by

$_z^AX$

here we know that

z = number of protons which gives an idea of positive charge of atom

A = mass number

it is the sum of number of protons and neutrons of an atom which will help us to calculate the mass of the atom

So here mass number A will give us an idea about the mass of atom

so correct answer will be

A) It contains most of the mass.

Answer 2

Answer:

The answer is A. It contains most of the mass <3

Explanation: