Question

Consider a neutrally charged atom that has an atomic mass number of 80, which includes 35 neutrons. how many electrons does this atom have?

Answer 1

Atomic mass number is the number of protons and neutrons. Subtract 80-35=45 is the number of protons. Because the atom is neutrally charged, the number of protons must equal the number of electrons, so there are 45 electrons.

Answer 2

45 electrons.

Step-by-step explanation:

mass number = 80

no. of neutrons = 35

Given that it is a neutrally charged atom,

no. of electrons = mass no. - no. of neutrons

= 80 - 35

= 45 electrons.