Answer:
BaCrO4.
Step-by-step explanation:
Barium chromate is a yellow, crystalline compound, BaCrO4, used as a pigment (barium yellow).
- Separate elements/compounds;
Barium is a whitish, malleable, active, divalent, metallic element, occurring in combination chiefly as barite or as witherite. Symbol: Ba; atomic weight: 137.34, atomic number: 56; specific gravity 3.5 at 20°C.
Chromate is a salt of chromic acid, as potassium chromate, K2CrO4.
Chromic acid is a hypothetical acid, H2CrO4, known only in the solution or in the form of salts.