Nitrogen is a good example:
-3 in NH3
-2 in N2H4
-1 in NH2OH
0 in N2
+1 in N2O
+2 in NO
+3 in NaNO2
+4 in NO2
+5 in HNO3
Other elements are not as versatile as nitrogen, but a typical non-metal will show all odd or even oxidation numbers over a range of 8 units, as well as zero, while a typical metal will show all odd or even oxidation numbers between 0 and its valence.
The elements that do show only one common oxidation number (other than zero) are all of the s-block elements and fluorine and oxygen.
You are asking about group 12. Generally they shows 14 as the oxidation number.
It shows some oxidation numbers. Generally it shows +4 oxidation numbers.
It is a gas. Generally it shows -2 oxidation number.
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
Group 1 elements have +1 oxidation number (except for hydrogen) All group 2 elements have +2 oxidation number Fluoride ion always has -1
Generally for group 16 elements, like oxygen, sulphur, selenium.
You are asking about group 12. Generally they shows 14 as the oxidation number.
Elements in group 2 mostly takes the oxidation number +II.
It shows some oxidation numbers. Generally it shows +4 oxidation numbers.
It is a gas. Generally it shows -2 oxidation number.
pretty much that is correct. although lead (Pb) is and example of of a +2 or +4 element and Arsenic (As) is a +3 or +5 element