Q. 184.2( 32 Votes )
Why is dioxygen a gas but sulphur a solid?
Oxygen is smaller in size as compared to sulphur. Due to its smaller size, it can effectively form pπ –pπ bonds and form O2[ O = = O] molecule. Also, the intermolecular forces in oxygen are weak van der Wall’s, which cause it to exist 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.
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Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?Chemistry - Exemplar
A. Account for the following:
(i) Ozone is thermodynamically unstable.
(ii) Solid is ionic in nature.
(iii) Fluorine forms only one oxoacid HoF.
B. Draw the structure of
(ii)Chemistry - Board Papers