Question

HELPPPP MEEE PLEASEEE!!!!!!

If you have 40 protons, 30 neutrons, and 42 electrons, which of the following is
true? (There are multiple answers!) *
Mass = 40
Mass = 70
Mass = 82
Mass = 112
Charge = -2
Charge = +2
Charge = +10
Charge = -10

Answer 1

Mass =70 ( Mass of protons=1 ,Mass of neutrons =1, Mass of electron =0.0005(can be ignored))
Therefore, 40 +30=70
Charge= -2 ( it is taking in/attracting electrons to its shell) base on the proton number you are able to identify if it is attracting or releasing an electron, if the electron number is more than proton number then it is attracting therefore resulting in a negative charge vice versa for releasing an electron.