1.

Some statements are given below about lanthanides : (A)Their tripositive ions are all coloured (B) With increase in atomic number, their atomic radii increases (C) Gadolinium exhibit oxidation state of +3 only (D) Last electrons in them enters into 5f orbitals Among the aboveA. Only A is falseB. A, B and C are falseC. A, B and D are falseD. B, C and D are false

Answer» Correct Answer - C


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