Which of the following statements are correct?

(A) The reduction potential for iron is greater than manganese.
(B) The higher oxidation states of first row d-block elements get stabilized by oxide i

Question

Which of the following statements are correct?

(A) The  reduction potential for iron is greater than manganese.
(B) The higher oxidation states of first row d-block elements get stabilized by oxide ion.
(C) Aqueous solution of  can liberate hydrogen from dilute acid.
(D) Magnetic moment of  is observed between 4.4–5.2 BM.

Choose the correct answer from the options given below:

Canvas Classes · Accepted Answer

Analysing each statement:

A.  — FALSE ✗

V;  V

Mn³⁺/Mn²⁺ is greater, not Fe.

B. Higher O.S. stabilized by oxide ion — TRUE ✓

Oxide ion () is a hard base and stabilizes high oxidation states of transition metals (e.g., , , ).

C.  liberates H₂ from dilute acid — TRUE ✓

V (negative) →  is a strong reducing agent and can reduce  to .

D. Magnetic moment of  between 4.4–5.2 BM — FALSE ✗

: , 3 unpaired electrons →  BM (not in 4.4–5.2 range)

Correct: B and C

Answer: Option (1) — (B), (C) onl

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