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MP, BP and Electrical Conductivity

Sulphur is li...

Question

Sulphur is like oxygen which has 6 valence electrons. So, it can obtain octet by sharing two electrons like oxygen and make a molecule of 2 atoms. Then why a sulphur molecule is made of 8 atoms?

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Solution

Oxygen atom due to its small size is capable of forming pÏ€-pÏ€ bond and thus forms O₂ (O=O) molecule and the vander waal's force of attraction is present between Oxygen molecule, which are weak, as a result oxygen exist exist as discrete molecule (as a gas). However, Sulphur due to its large size is not able to form pÏ€-pÏ€ bond but rather exists in puckered rings, with covalent bonding the adjacent Sulphur atom.

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Q. Sulphur and the rest of the elements of group 16 are less electronegative than oxygen. Therefore, their atoms cannot accept electrons easily. They can acquire the

n s^{2} n p^{6}

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+ 2

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d

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Like sulphur, oxygen does not show

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