please answer this question 1 and 2
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please answer this question 1 and 2
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Answer:
(1)d)Sc3+
(2)d)more hard and brittle
Explanation:
(1) answer is Sc3+ because There is an electron free to jump between energy level. Thus Ti3+ ions selectively absorb certain colours, hence its solution is coloured. SC3+, on the other hand, has an empty d orbital; the [Sc(H2O)6]+3 complex has no electrons in T2g or eg orbitals. Hence SC3+ is colourless in aqueous solution.
(2) Formation of interstitial compounds make transition elements more hard as the small non-metallic atoms present at interstitial sites form covalent bonds with the transition metal atoms.