Question

Why Manganese has lower Melting and boiling point?

Answer 1

Manganese has 5 free electrons in its d orbital so it take place more in metallic bonding as compared to other elements in its neighborhood (left and right in periodic table) who have 4 free electrons in their d orbital. More metallic bonding means more energy requires in breaking bond and more melting point.

Answer 2

Manganese has lower Melting and boiling point ;

# Because of the following reasons :--

• With decrease in unpaired or vacant electrons or orbitals, Melting and Boiling point also decreases .

• Thus, there is weak mettalic bonding further due to less unpaired electrons .

• It reduces Enthalpy of Atomization value .