Q31.Number of paramagnetic oxides among the following given oxides is ___________ . Li2O, CaO, Na2O2, KO2, MgO and K2O (1) 1 (2) 3 (3) 0 (4) 2
What This Question Tests
This question assesses the knowledge of paramagnetic nature of various oxides, peroxides, and superoxides, which depends on the presence of unpaired electrons, often determined using MO theory for oxygen species.
Concepts Tested
📚 NCERT Sections This Tests
5.19 — [Cr(Nh3)6] 3+ Is Paramagnetic While [Ni(Cn)4] 2– Is Diamagnetic. Explain Why?
Chemistry Class 11 · Chapter 5
5.19 [Cr(NH3)6] 3+ is paramagnetic while [Ni(CN)4] 2– is diamagnetic. Explain why? 5.20 A solution of [Ni(H2O)6] 2+ is green but a solution of [Ni(CN)4] 2– is colourless. Explain. 5.21 [Fe(CN)6] 4– and [Fe(H2O)6] 2+ are of different colours in dilute solutions. Why?
5.15 — Discuss The Nature Of Bonding In The Following Coordination Entities On The
Chemistry Class 11 · Chapter 5
5.15 Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory: (i) [Fe(CN)6] 4– (ii) [FeF6] 3– (iii) [Co(C2O4)3]3– (iv) [CoF6] 3–
4.11 — Explain Giving Reasons:
Chemistry Class 11 · Chapter 4
4.11 Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.
📋 Question Details
- Chapter
- s-block Elements
- Topic
- Properties of alkali metal oxides and peroxides/superoxides
- Year
- 2021
- Shift
- 01 Sep Shift 2
- Q Number
- Q31
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 10: The s-Block Elements
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