An element that exhibits allotropy is:
All are correct.
Phosphorus.
Carbon.
Sulphur.
The two crystalline allotropes of carbon are:
Coke and diamond.
Amorphous carbon and diamond.
Diamond and graphite.
Amorphous carbon and graphite.
The allotropes of carbon are:
Amorphous carbon.
Diamond.
Graphite.
Carbon occurs:
None is correct.
Only in the combined states.
Both in the combined and the uncombined states.
Only in the uncombined states.
