Question

Potassium tetra hydroxo zincate (II)

Answer 1

K2(Zn(OH)4

Explanation:

This is potassium tetra hydroxo zincate

Answer 2

The chemical formula is $K_2[Zn(OH)_4$

Explanation :

Rules for naming of the coordination compounds :

The ligand named first then metal.

The charge of metal indicated with the Roman numerals and enclosed in the parenthesis after metal name.

The ligands are named in alphabetical order before the metal ion.

Ligands that include a numerical prefix in the name use the prefixes bis for 2, tris for 3, or tetrakis for 4 to indicate their number.

If the complex ion is an anion, we drop the ending of the metal name and add –ate.

In the given coordination compound, metal is zinc (Zn) , hydroxo (OH)  is the ligand and as the name ends with -ate, the coordination complex is negatively charged with -2 oxidation state.

The chemical formula is $K_2[Zn(OH)_4$

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