Question

The sum of the total number of bonds between chromium and oxygen atoms in chromate and dichromate ions is:

Answer 1

Chromate:

• It is mostly employed as a corrosion inhibitor, primer, ornamental finish, or to preserve electrical conductance.
• The chromate in chromic acid, also known as hexavalent chromium, the substance that is most frequently utilized in the immersion bath phase of coating application, gives the procedure its name.

Structure of Chromate and Dichromate:

• Chromate ion
• Molecular Formula of Chromate Ion is ${{\mathrm{CrO}}_4}^{-2}$

• Number of bonds $=7$
• Dichromate ion
• Molecular formula of dichromate ion is ${\mathrm{Cr}2{\mathrm{O}}_7}^{-2}$.

• Number of bonds$=12$
• The sum of the total number of bonds formed between oxygen and chromium is $19$ in Chromate and Dichromate ions.