Group 2 or alkaline earth metals
Because there in group 2
Oxidation number is +2 for Zn+2 ion
+2 for group 2 elements
oxidation number of S is +6.It oxidize into SO4 ^-2
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
Because there in group 2
Group 1 elements have +1 oxidation number (except for hydrogen) All group 2 elements have +2 oxidation number Fluoride ion always has -1
Carbon has +2 oxidation number in Carbon monoxide. It gets this oxidation number when it loses or shares two electrons.
They do not. The group 2 elements, Be, Mg, Ca etc, have oxidation numbers of +2.
It can be a any group. Generally they shows +2 in group 2.
Magnesium is in the group 2. 0 is the lowest oxidation number for it.
2-