| ⇦ | 
| ⇨ |
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: - If a compound, on analysis was found to contain C=18.5% ,H=1.55%, Cl=55.04%
- The activation energy of a reaction at a given temperature is found to be 2.303
- Which of the following statement is false for an isothermal expansion
- Sea weeds are an important source of
- Which of othe following is paramagnetic?
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
- If a compound, on analysis was found to contain C=18.5% ,H=1.55%, Cl=55.04%
- The activation energy of a reaction at a given temperature is found to be 2.303
- Which of the following statement is false for an isothermal expansion
- Sea weeds are an important source of
- Which of othe following is paramagnetic?
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