Why melting point of transition elements across a period first increases at its maximum value and then decreases?
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ANSWER :
The melting and boiling points of transition elements increases from scandium to vanadium. They increase because as we go across the group, we have more unpaired (free) electrons.
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Explanation:
The first 4 elements in a row always have the highest melting ... d orbital electrons pair up, the melting point decreases.
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