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Match the species given in Column I with the properties mentioned in Column II. Column I Column II (i) BFX4− (a) Oxidation state of central atom is +4 (ii) AICI3 (b) Strong oxidising agent

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प्रश्न

Match the species given in Column I with the properties mentioned in Column II.

Column I Column II
(i) \[\ce{BF^{-}4}\] (a) Oxidation state of central atom is +4
(ii) AICI3 (b) Strong oxidising agent
(iii) SnO (c) Lewis acid
(iv) PbO2 (d) Can be further oxidised
  (e) Tetrahedral shape
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उत्तर

Column I Column II
(i) \[\ce{BF^{-}4}\] (e) Tetrahedral shape
(ii) AICI3 (c) Lewis acid
(iii) SnO (d) Can be further oxidised
(iv) PbO2 (b) Strong oxidising agent

Explanation:

(i) \[\ce{BF^{-}4}\]: Tetrahedral shape, sp3 hybridisation, regular geometry.

(ii) AlCl3: Octet of Al not complete, acts as Lewis acid.

(iii) SnO: Sn2+ can show +4 oxidation state.

(iv) PbO2: Due to inert pair effect, Pb4+ is less stable than Pb2+ and hence acts as strong oxidising agent.

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पाठ 11: The p-block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १३९]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 11
पाठ 11 The p-block Elements
Multiple Choice Questions (Type - I) | Q 36 | पृष्ठ १३९

संबंधित प्रश्‍न

How can you explain higher stability of BClas compared to TlCl3?


Suggest reasons why the B–F bond lengths in BF3 (130 pm) and `"BF"_4^(-)` (143 pm) differ.


The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central atom. The hybridisation of orbitals of central atom in [Be(OH)4] and the geometry of the complex are respectively.


Which of the following oxides is acidic in nature?


Ionisation enthalpy (∆iH1kJ mol–1) for the elements of Group 13 follows the order.


The most commonly used reducing agent is ______.


Explain why the following compounds behave as Lewis acids?

AlCl3


Aluminium dissolves in mineral acids and aqueous alkalies and thus shows amphoteric character. A piece of aluminium foil is treated with dilute hydrochloric acid or dilute sodium hydroxide solution in a test tube and on bringing a burning matchstick near the mouth of the test tube, a pop sound indicates the evolution of hydrogen gas. The same activity when performed with concentrated nitric acid, reaction doesn’t proceed. Explain the reason.


Explain the following:

PbX2 is more stable than PbX4.


Explain the following:

Tl (NO3)3 acts as an oxidising agent.


Match the species given in Column I with properties given in Column II.

Column I Column II
(i) Diborane (a) Used as a flux for soldering metals
(ii) Galluim (b) Crystalline form of silica
(iii) Borax (c) Banana bonds
(iv) Aluminosilicate (d) Low melting, high boiling, useful for measuring high temperatures
(v) Quartz (e) Used as catalyst in petrochemical industries

Match the species given in Column I with the hybridisation given in Column II.

Column I Column II
(i) Boron in [B(OH)4] (a) sp2
(ii) Aluminium in [Al(H2O)6]3+ (b) sp3
(iii) Boron in B2H6 (c) sp3d2
(iv) Carbon in Buckminsterfullerene  
(v) Silicon in \[\ce{SiO^{4-}4}\]  
(vi) Germanium in [GeCl6]2–  

Account for the following observations:

The +1 oxidation state of thallium is more stable than its +3 state.


Three pairs of compounds are given below. Identify that compound in each of the pairs which has group 13 element in more stable oxidation state. Give reason for your choice. State the nature of bonding also.

AlCl3 , AlCl


A group 13 element ‘X’ reacts with chlorine gas to produce a compound XCl3. XCl3 is electron deficient and easily reacts with NH3 to form \[\ce{Cl3X –> NH3}\] adduct; however, XCl3 does not dimerize X is ______.


Taking stability as the factor, which one of the following represents the correct relationship?


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