atomic number and mass number Flashcards
1
Q
what is an atomic number
A
is the number of protons found in the nucleus atom
2
Q
in an atom the number of electrons is the same as the
A
number of protons
3
Q
why are atoms neutral
A
because the number of protons is the same as the number of electrons
4
Q
what is the mass number of an atom?
A
is the protons plus the neutrons
5
Q
how do u find how much neutrons are present in an atom
A
mas no-p