Question

An atom has 20 protons and 22 neutrons and 18 electrons. The charge of this atom is: ________

Answer 1

Answer:

the number of electrons should equal to the the number of protons in a neutral atom

if there is a inequality between the numbers it means the atom has a + or - charge

The charge of this atom=+(20-18)=+2

Answer 2

Answer:

20 protons.

Explanation:

20 protons = 20 + charges

18 electrons = 18 - charges



The difference = 20 - 18 = +2

The charge for this atom is plus 2


It would be a calcium atom. This element is number 20 on the periodic table.


Hope this helps!