Question

An atom is determined to contain 12 protons, 10 electrons, and 12 neutrons. What are the mass number and charge of this atom or ion?

Answer 1

mass number: 24, charge: +2
mass number: 22, charge: neutral
mass number: 34, charge: -2
mass number: 34, charge: +2

Answer 2

@Preetha

Answer 3

Do you know what mass number is?

Answer 4

The mass number is the number of protons + neutrons

Answer 5

so mass number is 12 + 12

Answer 6

Note that there are 2 more protons than electrons which means that we have an ion with a chatge of +2