Elements in this group are very unreactive
Elements in this group are stored under oil as they are very reactive with air and water.
Name given to elements in group 7
Number of protons = 4 Number of neutrons = 5 Number of electrons = 2
Number of protons = 11 Number of neutrons = 12 Number of electrons = 10
Number of protons = 16 Number of neutrons = 16 Number of electrons = 18
Halogens
Alkali metals
Number of protons = 12 Number of neutrons = 12 Number of electrons = 12
Noble gases
