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प्रश्न
Which of the following orders are correct as per the properties mentioned against each?
| (i) | \[\ce{As2O3 < SiO2 < P2O3 < SO2}\] | Acid strength. |
| (ii) | \[\ce{AsH3 < PH3 < NH3}\] | Enthalpy of vapourisation. |
| (iii) | \[\ce{S < O < Cl < F}\] | More negative electron gain enthalpy. |
| (iv) | \[\ce{H2O > H2S > H2Se > H2Te}\] | Thermal stability. |
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उत्तर
| (i) | \[\ce{As2O3 < SiO2 < P2O3 < SO2}\] | Acid strength. |
| (iv) | \[\ce{H2O > H2S > H2Se > H2Te}\] | Thermal stability. |
Explanation:
Acidic strength of oxides in a group decreases down the group and increases along a period from left to right.
Thermal stability of hydrides of group 16 decreases down the group.
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संबंधित प्रश्न
Nitrogen does not form pentahalide.
Account for the following:
N2 is less reactive at room temperature.
Account for the following: Reducing character increases from NH3 to BiH3.
Considering the parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy, compare the oxidising power of F2 and Cl2.
Discuss the trends in chemical reactivity of group 15 elements.
Arrange the following in the increasing order of property mentioned:
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(a) + 1
(b) + 2
(c) + 3
(d) + 4
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Maximum covalency of nitrogen is ______.
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The tribasic acid is ____________.
The strongest oxidising agent is ____________.
Which of the following species has the highest dipole moment?
The p-block element of group 15 that forms predominantly basic oxide is _____________.
Which of the following has highest ionisation enthalpy?
Which of the following statements is wrong?
Match the items of Columns I and II and mark the correct option.
| Column I | Column II | |
| (A) | Its partial hydrolysis does not | (1) He |
| (B) | It is used in modern diving apparatus | (2) XeF6 |
| (C) | It is used to provide inert atmosphere for filling electrical bulbs |
(3) XeF4 |
| (D) | Its central atom is in sp3d2 hybridisation | (4) Ar |
Basicity of ortho phosphoric acid is:-
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