Answer: A. Typical properties of transition elements (e.g., Cu, Fe, Cr, Mn): high melting point, high density, high electrical conductivity, variable oxidation states, and coloured compounds.
From the list given:
• low melting point — no (transition metals have high mp)
• low density — no (transition metals are dense)
• high electrical conductivity — yes ✓
• forms compounds with variable oxidation states — yes ✓
• only forms white compounds — no (transition compounds are typically coloured)
Only 2 of the 5 properties apply → A.
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