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प्रश्न
Give reasons Dioxygen is a gas while Sulphur is a solid at room temperature.
उत्तर
An oxygen atom is smaller in size as compared to the sulphur atom. Due to its smaller size, oxygen can effectively form pπ-pπ bonds and exist as O2 (O=O) molecule. Also, the intermolecular forces in oxygen are weak Van der Waal's forces, due to which it exists as a gas. On the other hand, sulphur does not form M2 molecule but exists as a puckered structure held together by strong covalent bonds. Hence, it is a solid at room temperature.
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संबंधित प्रश्न
The atomicity of sulphur in orthorhombic sulphur is______________ .
(a) 8
(b) 6
(c) 4
(d) 2
Write the electronic configuration of the following elements:
Sulphur (Z = 16)
3.795 g of sulphur is dissolved in 100g of CS2. This solution boils at 319.81 K. What is the molecular formula of sulphur in solution? The boiling point of CS2 is 319.45 K. (Given that Kb for CS2 = 2.42 K kg mol-1 and atomic mass of S = 32)
How do you prepare:
Na2Cr2O7 from Na2CrO4?
Give reasons for the following:
Sulphur in vapour state shows paramagnetic behaviour.
Assertion: Both rhombic and monoclinic sulphur exist as S8 but oxygen exists as O2.
Reason: Oxygen forms pπ – pπ multiple bonds due to small size and small bond length but pπ – pπ bonding is not possible in sulphur.
α and β forms of sulphur are at equilibrium at a temperature known as ______.
Name two allotropes of sulphur.
Draw structure of sulphur molecule (Rhombic sulphur). Mention bond angle and bond length.
