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Which one of the following ions has electronic configuration[Ar] 3d⁶? (At. no: Mn=25, Fe=26, Co=27, Ni=28)
Options
(a) Ni³⁺
(b) Mn³⁺
(c) Fe³⁺
(d) Co³⁺
Correct Answer:
Co³⁺
Explanation:
Ni³⁺ (28) = [Ar] 3d⁷
Mn³⁺ (25) = [Ar] 3d⁴
Fe³⁺ (26) = [Ar] 3d⁵
Co³⁺ (27) = [Ar] 3d⁶
Related Questions: - A no. of ionic compounds, e.g., AgCl, CaF₂, BaSO₄ are insoluable in water
- Na₂CO₃ is manufactured by solvay process, the products that are recycled are
- On heating which of the following releases CO₂ most easily
- A 20 mass percent H₂SO₄ solution has density 1.15 g mL⁻¹.Molarity
- Of the following, which change will shift the reaction towards the product
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Structure of Atom
(90)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A no. of ionic compounds, e.g., AgCl, CaF₂, BaSO₄ are insoluable in water
- Na₂CO₃ is manufactured by solvay process, the products that are recycled are
- On heating which of the following releases CO₂ most easily
- A 20 mass percent H₂SO₄ solution has density 1.15 g mL⁻¹.Molarity
- Of the following, which change will shift the reaction towards the product
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Structure of Atom (90)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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