Match the entries of column I with appro

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: D and F Block Elements

Question:

Match the entries of column I with appropriate entries of column II and choose the correct option out of the four options given.

Column I (Property)	Column II (Element)
(i) Lanthanoid which shows +4 oxidation state	(a) Pm
(ii) Lanthanoid which can show +2 oxidation state	(b) Ce
(iii) Radioactive lanthanoid	(c) Lu
(iv) Lanthanoid which has 4f¹⁴ electronic configuration in +3 oxidation state.	(d) Eu

Options:

(i)-(a), (ii)-(d), (iii)-(b), (iv)-(c)

(i)-(a), (ii)-(b), (iii)-(c), (iv)-(d)

(i)-(b), (ii)-(c), (iii)-(a), (iv)-(d)

(i)-(b), (ii)-(d), (iii)-(a), (iv)-(c)

Correct Answer:

(i)-(b), (ii)-(d), (iii)-(a), (iv)-(c)

Explanation:

(i) Lanthanoid which shows +4 oxidation state is Ce.

(ii) Lanthanoid which can show +2 oxidation state is Eu.

(iii) Radioactive lanthanoid is Pm.

(iv) Lanthanoid which has 4f¹⁴ electronic configuration in +3 oxidation state is Lu.