No, because crystalline has more than one element in it, basically it is a compound.
A white crystalline compound is also called cytidine.
yes
AgCl is a white crystalline solid and is well known for its low solubility in water.
element
Calcium oxide is a white, caustic and alkaline crystalline solid at room temperature.
A white crystalline compound is also called cytidine.
Chlorine.
"White crystalline" is not a criterion in this case.
It is a compound.
Butylated hydroxytoluene (BHT) is a synthetic antioxidant used as a food additive to prevent fats and oils from becoming rancid. It is also used in cosmetics, pharmaceuticals, and rubber products. BHT has been associated with controversies regarding its safety and potential health effects, although regulatory authorities have deemed it safe for use in limited quantities.
It's a white crystalline solid.
Calcium sulphide is a compund, it has the formula CaS, and is a white solid.
Zinc
Sodium chloride is a white, crystalline, solid.
I assume that you really mean sodium iodide (NaI), as there is no compound called sodium iodine. NaI is a white crystalline solid.
Dextrose
yes magnesium nitrate is a solid, as it is a white crystalline solid from being a salt.