1.

Which of the following statements are correct.

Answer»

Tendency to form complex: `Sc^(+3) gt Y^(+3) gt LA^(+3)`
Most of `LN^(3+)` are coloured.
Ln(II) hydroxides are MAINLY basic in character
lanthanoids RELEASE `H_(2)` on reaction with strong acids.

Answer :A::B::C::D


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