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Home/Practice questions/Chemistry

ChemistryInorganic: D and F Block Elements

Which of the following ion is colourless?

Which of the following ion is colourless?

Answer & explanation+

Correct answer: option 3

Gd³⁺is colourless.

₆₄Gd: [Xe]4f⁷5d¹6s²

Gd³⁺: [Xe]4f⁷

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