The mass of proton is……….
a) 1737 times greater than that of electron
b) 1837 times greater than that of electron
c) 1737 times greater than that of neutron
d) 1837 times greater than that of neutron
An atom is………..
a) negative
b) positive
c) neutral
d) none of these
It has one proton in its nucleus, its atomic number is 1:
a) oxygen
b) helium
c) carbon
d) hydrogen
Atom becomes negative charge when it:
a) absorb electrons
b) release electrons
c) release protons
d) none of these
Hydrogen has………
a) 2 isotopes
b) 3 isotopes
c) 4 isotopes
d) 5 isotopes
Carbon has………
a) 2 isotopes
b) 3 isotopes
c) 4 isotopes
d) 5 isotopes
