| ⇦ | 
| ⇨ |
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: - PV/T= Constant. A real gas will behave as ideal gas
- An orbital in which n = 4 and l = 2 is expressed by
- Which of the following metal is not ferromagnetic
- ortho and para hydrogen differ in the
- What is the [OH⁻] in the final solution prepared by mixing 20 mL of 0.05 M Hcl
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
- PV/T= Constant. A real gas will behave as ideal gas
- An orbital in which n = 4 and l = 2 is expressed by
- Which of the following metal is not ferromagnetic
- ortho and para hydrogen differ in the
- What is the [OH⁻] in the final solution prepared by mixing 20 mL of 0.05 M Hcl
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
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply