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Which is the most common oxidation state in Lanthanoids ?
Why is there a gradual decrease in the atomic sizes of transition metals in a series with increasing atomic numbers ?
Calculate the number of unpaired electrons in the following gaseous ions : V3+, Ti3+
The most common oxidation state for all lanthanoids is :
Account for the following : (1) Zn²⁺ salts are colourless while Ni²⁺ salts are coloured. (2) Cr²⁺ is a strong reducing agent. (3) Transition metals and their compounds show catalytic activities.
Write the ionic equations for the oxidizing action of MnO₄⁻ in acidic medium with (1) I⁻ ion, and (2) Fe²⁺ ion.
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