Question

What happens to the melting point of d-block elements across a period?

Answer 1

Transition elements:

• The transition metals consist of partially or completely filled d subshells in the element in a free state or in the form of the cation.
• They are good conductors of heat and electricity.

Trend of the melting point of d-block elements:

• Across a period as the atomic number increases, the melting point of transition elements increases maximum up to ${\mathrm{d}}^5$ and then decreases.
• The trend of boiling or melting points varies from group to group.