Question

The number of positive charges in the nucleus of an atom is equal to:

1) its mass number
2) its atomic number
3) Avogrados number
4) its atomic mass

Answer 1

The answer is 2) Its atomic number because that’s what the protons represent

Answer 2

Answer: The correct answer is Option 2.

Step-by-step explanation:

For the given options:

Option 1: Mass number is defined as the sum of number of neutrons (having neutral charge) and number of protons.

Mass number = Number of protons + Number of neutrons

Option 2: Atomic number is defined as the number of protons (having positive charge) or number of electrons (having negative charge).

Atomic number = Number of protons = Number of electrons

Option 3: Avogadro's number is defined as the number of atoms that are present in 1 mole of an atom. The value of it is
`6.022* 10^(23)`

Option 4: Atomic mass is defined as the sum of mass of neutrons and mass of protons.

From the above information, the number of positive charges in the nucleus of an atom is equal to its atomic number.

Thus, the correct answer is Option 2.