Is white crystalline solid a compound or an element?

Answer 1

No, because crystalline has more than one element in it, basically it is a compound.

Answer 2

A white crystalline solid can be either a compound or an element. It depends on the specific substance in question. For example, table salt (sodium chloride) is a white crystalline compound, while pure elemental sulfur can also be a white crystalline solid. Testing and analysis are usually needed to determine whether the solid is a compound or an element.