Ncert Solutions Chemistry Class 11th

12.7. Give condensed and bond line structural formulas and identify the functional group(s) present, if any, for: 

(a) 2, 2, 4-Trimethylpentane

(b) 2-Hydroxy-l, 2, 3-propanetricarboxylic acid

(c) Hexanedial
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12.3. Write bond-line formulas for: Isopropyl alcohol, 2,3-Dimethylbutanal, Heptan-4-one.

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12.1. What are hybridisation states of each carbon atom in the following compounds? CH₂=C=O, CH₃CH=CH₂, (CH₃)₂CO, CH₂=CHCN, C₆H₆.

11.4 The state of hybridisation of B in BH₄ is

(a) sp (b) sp² (c)sp³ (d) None
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11.3. Assertion: PbI₄ does not exist.

Reason: Pb—I bond initially formedduring the reaction does not release enoughenergy to unpair6s² electrons and excite oneof them to higher orbital to have four unpairedelectrons around lead atom.

11.2. Assertion: The compounds formed by highlyreactive non-metals with highly reactive metalsaregenerally ionic while compounds formed between non-metals themselves are largely covalent in character.

Reason: There are large differencesin the electronegativities of highly reactive non-metals and highly reactive metals whereas small differences in theelectronegativities among the non-metals themselves.

11.1. Assertion: Non-metals readily form anions, in contrast to metals whichreadily form cations.

Reason: In general, non-metals have higher ionisation enthalpies and higherelectronegativities than the metals.

11.10. Write the resonance structures of CO₃^2- and HCO₃^–.

10.4. Salt of which alkaline earth metals do not impart colour to a non-luminous flame.

(a) Ca (b) Mg (c) Be (d) Ba
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10.3. Which of the following is not a peroxide?
(a) KO₂                 (b) CrO₅              (c) Na₂O₂            (d) BaO₂