Question

Write the chemical formula for the complex compound: Sodium (ethylenediaminetetraacetate) chromate(II).

Answer 1

Answer:

Na2[Cr(C2H4N2H4)(CH3COO)]

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Answer 2

Answer:

The chemical formula of Sodium (ethylenediaminetetraacetate) chromate(II) is Na₂[Cr(NH₂CH₂CH₂NH₂)(CH₃COO)₄].

Explanation:

• For the given complex one ethylenediamine is present having formula NH₂CH₂CH₂NH₂ = en.
• The four acetate CH₃COO⁻ groups are present.
• Metal chromium is present in the anionic part of the complex therefore it have suffix 'ate' in the end.
• Oxidation state of Cr:

                      $x+4(-1)+0=-2\\ x=4-2\\ x=+2$

       Here, Cr present in (II) oxidation state.

Therefore the chemical formula of given complex is  Na₂[Cr(en)(CH₃COO)₄].