Atomic structure: Atomic structure and
the periodic table: Chemstry: GCSE (9:1)
Relative mass of a proton
1
.
Relative mass of a neutron
about the same as that of a proton
Relative mass of an electron
1/1840
Relative charge of a proton
+1
, Relative charge of a neutron
0
Relative charge of an electron
-1
Neutral atoms
same number of positive protons as negative electrons
Atomic (proton) number
the number of protons in the nucleus of an atom
the periodic table: Chemstry: GCSE (9:1)
Relative mass of a proton
1
.
Relative mass of a neutron
about the same as that of a proton
Relative mass of an electron
1/1840
Relative charge of a proton
+1
, Relative charge of a neutron
0
Relative charge of an electron
-1
Neutral atoms
same number of positive protons as negative electrons
Atomic (proton) number
the number of protons in the nucleus of an atom
