question 14)
Li: 3 protons - 4 neutrons
Cr: atomic number 24 - mass 55 - 3 electrons
Al: 13 protons - 28 neutrons
Pb: 82 protons - 82 electrons - 125 neutrons
question 15)
He - Helium
Li - Lithium
Gold- Au
Mercury - Hg
P - Phosphorus
Fe - Iron
Scandium - Sc
Copper - Cu
Mg - Magnesium
Pb - lead
Argon - Ar
Silicon - Si
Fyi -
atomic number is the protons
in an ATOM the protons and electrons are ALWAYS the same
to find out the neutrons it’s mass-atomic number
