Question

What is the trend of melting point in d and f block​

Answer 1

Answer:

melting point of transition elements except cd and Hg is very high.because of presence of unpaired electron and they also exhibit the strong intramolecular metallic bonding.

TRENDS:-

• melting and boiling point is first increase and reaches maximum ( At Cr, Mo, and W) than slightly decreases across any transition series.

Explanation:

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Answer 2

Answer:

The melting and boiling points first increase, reaches maximum and then steadily decrease across any transition series. The high melting points are attributed to the involvement of greater number of electrons from (n-1) d orbitals, in addition to the electrons from the s orbital.