3.2 atomic structure

Question 1

which 3 subatomic particles make up an atom

Answer 1

protons
neutrons
electrons

Question 2

relative charge of protons, neutrons, electrons

Answer 2

protons -> +1
neutrons -> 0
electrons -> -1

Question 3

relative mass of protons, neutrons, electrons

Answer 3

protons -> 1
neutrons -> 1
electrons -> 0.0005

Question 4

what are the most stable atoms called and why are they stable

Answer 4

the noble gasses, they have a full outer electron shell