मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

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 - Chemistry

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प्रश्न

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–  
जोड्या लावा/जोड्या जुळवा
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उत्तर

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

Explanation:

(i) Boron in [B(OH)4] is sp3

(ii) Aluminium in [Al(H20)6]3+ is sp3d2 hybridized

(iii) Boron in B2H6 is sp3

(iv) Carbon in Buckminsterfullerene sp2 is hybridised.

(v) Silicon in \[\ce{SiO^{4-}4}\] is sp3

(vi) Germanium in [GeCl6]2- is sp3d2

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Group 13 Elements - The Boron Family
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पाठ 11: The p-block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १४०]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 11
पाठ 11 The p-block Elements
Multiple Choice Questions (Type - I) | Q 38 | पृष्ठ १४०

संबंधित प्रश्‍न

Write a balanced equation for Al + NaOH → ?


Which of the following oxides is acidic in nature?


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


In the structure of diborane ______.


A compound X, of boron reacts with NH3 on heating to give another compound Y which is called inorganic benzene. The compound X can be prepared by treating BF3 with Lithium aluminium hydride. The compounds X and Y are represented by the formulas.


The most commonly used reducing agent is ______.


Dry ice is ______.


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:

Electron gain enthalpy of chlorine is more negative as compared to fluorine.


Identify the compounds A, X and Z in the following reactions:

\[\ce{A + 2HCl + 5H2O -> 2NaCl + X}\]


Identify the compounds A, X and Z in the following reactions:

\[\ce{X ->[Δ][370 K] HBO2 ->[Δ][> 370 K] Z}\]


Describe the general trends in the following properties of the elements in Groups 13 and 14.

Ionisation enthalpy


Describe the general trends in the following properties of the elements in Groups 13 and 14.

Metallic character


Account for the following observations:

Though fluorine is more electronegative than chlorine yet BF3 is a weaker Lewis acid than BCl3 


Account for the following observations:

PbO2 is a stronger oxidising agent than SnO2 


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.

InCl3, InCl


A nonmetallic element of group 13, used in making bullet proof vests is extremely hard solid of black colour. It can exist in many allotropic forms and has unusually high melting point. Its trifluoride acts as Lewis acid towards ammonia. The element exihibits maximum covalency of four. Identify the element and write the reaction of its trifluoride with ammonia. Explain why does the trifluoride act as a Lewis acid.


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 ______.


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