The chemical name of K2[Zn(OH)4] is:
Correct answer: B. Potassium tetrahydroxozincate (II)
- A. Potassium tetrahydroxyzinc (II)
- B. Potassium tetrahydroxozincate (II)
- C. Potassium tetrahydroxyzincate (VI)
- D. Potassium hydroxyzinc (II)
Explanation
The chemical name of K2[Zn(OH)4] is derived by naming the cation first, which is Potassium. The complex ion is named by first identifying the central metal, Zinc, which has an oxidation state of +2, indicated in Roman numerals as (II). The presence of four hydroxide ions is denoted by 'tetrahydroxo'. Therefore, the correct name for the compound is Potassium tetrahydroxozincate (II), reflecting both the coordination number and the oxidation state of zinc. Other options are incorrect because they either misrepresent the oxidation state or the number of hydroxide ions in the compound.
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About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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