Ammonium heptamolybdate is an odourless crystalline compound ranging in colour from white to yellow-green. It is usually encoutered as the tetrahydrate, whose chemical formula is (NH₄)₆Mo₇O₂₄·₄H₂O. It is often referred to simply as ammonium molybdate, although this name can also refer to ammonium orthomolybdate, (NH₄)₂MoO₄, and several other species.

Ammonium heptamolybdate is an odourless crystalline compound ranging in colour from white to yellow-green. It is usually encoutered as the tetrahydrate, whose chemical formula is (NH₄)₆Mo₇O₂₄·₄H₂O. It is often referred to simply as ammonium molybdate, although this name can also refer to ammonium orthomolybdate, (NH₄)₂MoO₄, and several other species.

Neodymium is a chemical element with the symbol Nd and atomic number 60. It is a soft silvery metal which tarnishes in air. Neodymium was discovered in 1885. It is present in significant quantities in the ore minerals monazite and bastnäsite.

Neodymium is a chemical element with the symbol Nd and atomic number 60. It is a soft silvery metal which tarnishes in air. Neodymium was discovered in 1885. It is present in significant quantities in the ore minerals monazite and bastnäsite.