Determine the number of water molecules bound to sodium chromate.

(a) Provide an overview of the molecular structure of sodium chromate, emphasizing the key components involved.
(b) Explain the nature of molecular binding and the factors that influence the binding of water molecules to sodium chromate.
(c) Discuss any specific conditions or considerations that may affect the number of water molecules bound to sodium chromate.
(d) If applicable, outline the chemical reactions or interactions that lead to the binding of water molecules to sodium chromate.