Question

Match the properties with the elements of 3d series:

(i)	lowest enthalpy of atomisation	(p)	Sc
(ii)	shows maximum number of oxidation states	(q)	Mn
(iii)	transition metal that does not form coloured compounds	(r)	Zn
		(s)	Ti

विकल्प

• (i) (r), (ii) (q), (iii) (p)

• (i) (r), (ii) (s), (iii) (p)

• (i) (p), (ii) (q), (iii) (r)

• (i) (s), (ii) (r), (iii) (p)

Answer 1

(i) (r), (ii) (q), (iii) (p)

Explanation:

Zinc has no unpaired electrons in 3d or 4s orbitals, so enthalpy of atomization is low.

Mn = 3d⁵4s² shows +2, +3, +4, +5, +6  and +7 oxidation states, maximum number in 3d series.