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प्रश्न
Give reasons Thermal stability decreases from H2O to H2Te.
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उत्तर
The themal stability of hydrides of group 16 decreases as we move down the group i.e. H2O to H2Te. This is because on moving down the group, the size of the atom (attached to the hydrogens in a hydride) increases due to which the bond between hydrogen and the atom attached to it, weakens. Hence, it easily breaks on heating.
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संबंधित प्रश्न
a. Explain the trends in the following properties with reference to group 16:
1 Atomic radii and ionic radii
2 Density
3 ionisation enthalpy
4 Electronegativity
b. In the electolysis of AgNO3 solution 0.7g of Ag is deposited after a certain period of time. Calulate the quantity of electricity required in coulomb. (Molar mass of Ag is 107.9g mol-1)
Give reasons: SO2 is reducing while TeO2 is an oxidising agent.
Give reasons for the following : Oxygen has less electron gain enthalpy with negative sign than sulphur.
Justify the placement of O, S, Se, Te and Po in the same group of the periodic table in terms of electronic configuration, oxidation state and hydride formation.
Why are halogens strong oxidising agents?
The boiling points of hydrides of group 16 are in the order:
Strong reducing behaviour of \[\ce{H3PO2}\] is due to ______.
Which of the following statements are correct?
(i) \[\ce{CaF2 + H2SO4 -> CaSO4 + 2HF}\]
(ii) \[\ce{2HI + H2SO4 -> I2 + SO2 + 2H2O}\]
(iii) \[\ce{Cu + 2H2SO4 -> CuSO4 + SO2 + 2H2O}\]
(iv) \[\ce{Nacl + H2SO4 -> NaHSO4 + HCl}\]
The correct order of ΔiHs among the following elements is
What is the basicity of \[\ce{H3PO4}\]?
