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Why is dioxygen a gas but sulphur a soli...

Why is dioxygen a gas but sulphur a solid ?

Text Solution

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Dioxygen is a gas but sulphur a solid.
Explanation :
`to` Due to small atomic size and high electronegativity oxygen forms `P pi-P pi` multiple bond and exists as `O_(2)` molecules held together by weak vander waal's forces. Thus oxygen exists as a gas at room temperature.
`to` Due to large atomic size and less electronegativity sulphur forms strong S-S single bonds and exists as `S_(8)` molecules with puckered ring structure. Hence sulphur is a solid at room temperature.
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Knowledge Check

  • F_2 is gas but I_2 is solid, because

    A
    Larger London forces are present in `I_2` when compared with `F_2`
    B
    Lesser number of London forces are present in `I_2` when compared with `F_2`
    C
    `F_2 and I_2` have same extent of London forces
    D
    `I_2` has low bond dissociation energy
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