The dand fblock elements - Result Question 11
####11. Which one of the following does not correctly represent the correct order of the property indicated against it?
[2012 M]
(a) $Ti<V<Cr<Mn$ : increasing number of oxidation states
(b) $Ti^{3+}<V^{3+}<Cr^{3+}<Mn^{3+}$ : increasing magnetic moment
(c) $Ti<V<Cr<Mn$ : increasing melting points
(d) $Ti<V<Mn<Cr$ : increasing $2^{\text{nd }}$ ionization enthalpy
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Solution:
- (c) The melting points of the transition elements first rise to a maximum and then fall as the atomic number increases, manganese have abnormally low melting points.
