Question

The atomic mass of an atom (in amu) is equal to

Question 11 options:

the total number of electrons


the total number of its protons and neutrons


the total number of protons


the total number of neutrons


the total number of its protons, neutrons, and electrons

Answer 1

Atomic mass = protons + neutrons

So the total number of protons and neutrons

Answer 2

Answer:

the total number of its protons and neutrons

Explanation:

An atom is represented by

$_z^AX$

here we know that

z = atomic number

it represent the total number of protons or total number of electrons present in an neutral atom

A = mass number

it represents the total number of neutrons and protons present inside the nuclei of an atom

this is also known as atomic mass of an atom in amu (atomic mass unit)