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

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प्रश्न

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

Oxidation states

दीर्घउत्तर
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उत्तर

Possible oxidation states Group 13 elements are from +3 to –5. But the stability of +1 oxidation state increases down the group due to inert their effect than the stability of +3 oxidation state. 

Similarly, in group 14, The common oxidation states shown by the carbon family are +2 and +4. Due to the inert pair effect, stability of +2 oxidation state increases then the stability of +4.

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

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 11
पाठ 11 The p-block Elements
Multiple Choice Questions (Type - I) | Q 41.(iv) | पृष्ठ १४०

संबंधित प्रश्‍न

Aluminium trifluoride is insoluble in anhydrous HF but dissolves on the addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF3 is bubbled through. Give reasons.


How would you explain the lower atomic radius of Ga as compared to Al?


What do you understand by inert pair effect?


Write a balanced equation for Al + NaOH → ?


Dry ice is ______.


Explain why the following compounds behave as Lewis acids?

BCl3


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:

Pb4+ acts as an oxidising agent but Sn2+ acts as a reducing agent.


Explain the following:

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


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

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

Ionisation enthalpy


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.

TlCl3, TlCl


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


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


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