Question

An atom has 14 protons, 17 neutrons, and 18 electrons. What is its mass number, atomic number, and charge?

Answer 1

Answer:

Mass number = 31

Atomic Number = 14

Charge = -4

Explanation:

14 protons

17 neutrons

18 electrons

Mass number = ?

Mass number = protons + neutrons.

$Mass\:number = 14+17\\\\Mass \:number = 31$

Atomic number = ?

The number of protons = atomic number.

Atomic number = 14

Charge = ?

The charge of an element = number of protons minus the number of electrons.

$Charge=14 -18\\\\Charge = -4$