Which of the following is true about transition elements ?

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They show variable oxidation states

They are highly reactive.

They have low melting point.

They are highly electropositive

answer is C.

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Detailed Solution

The metallic bonding of transition metals is strong due to availability of more number of electrons to participate in bonding. As a result MP is high. In general, they are less reactive due to their high heat of atomisation. Also, they are less electropositive than alkali metals.

They show variable oxidation states except Sc because their valence electrons are available in two different set of orbitals and there is less energy gap between these different set of orbitals.

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