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

Why is dioxygen a gas but sulphur a solid?

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Because oxygen is smaller in size hence have capacity to form pπ–pπ multiple bond, exists as dioxygen `(O_(2))`, whereas due to bigger size sulphur do not form multiple bond and exist as `S_(8)`.
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(a) Complete the followingh chemical reaction equations : (i) Cu+HNO_(3 (dilute))to (ii) P_4+NaOH+H_2Oto (b) (i) why does R_3P=O exist but R_3N=O does not ? (R=alkyl group) (ii) why is dioxygen a gas but sulphur a solid ? (iii) why are halogens coloured ?

(a) What happens when : (i) HCl reacts with finely powdered iron. (ii) Cl_(2) reacts with hot concentrated solution of NaOH. (b) Give appropriate reason for each of the following : (i) Sulphur vapour exhibits some paramagnetic character. (ii) NH_(3) more basic than PH_(3) . (iii) Dioxygen is a gas but sulphur a solid.

Give reasons : (a) H_(3)PO_(3) undergoes disproportination reaction but H_(3)PO_(4) does not (b) Dioxygen is a gas while sulphur is a solid (c ) When Cl_(2) reacts with excess of F_(2) compound formed is CiF_(3) " and not " FCl_(3) .

Oxygen is gas but sulphur is solid because

Write a balanced chemical equation of the following reactions and also classify them. Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.

CBSE COMPLEMENTARY MATERIAL-P-BLOCK ELEMENTS-VERY SHORT ANSWER TYPE QUESTIONS
  1. H2 O is a liquid while H2 S is a gas.

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  2. The electron gain enthalpy with negative sign for oxygen (− 141 KJ mol...

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  3. Why is dioxygen a gas but sulphur a solid?

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  4. In the preparation of H(2)SO(4) by Contact process, why is SO(3) not ...

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  5. Explain why fluorine forms only one oxoacid, HOF.

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  6. Why HF is the weakest acid and HI is the strongest ?

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  7. Explain why halogens are strong oxidizing agents.

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  8. I(2) is more soluble in KI than in water. Why ?

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  9. What is cause of bleaching action of chlorine water ? Explain it with ...

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  10. Electron gain enthalpy of fluorine is less than that of chlorine - exp...

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  11. Why can’t we prepare HBr by heating KBr with sulphuric acid ?

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  12. Explain why : ICl is more reactive than I(2) ?

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  13. Which oxide of iodine is used for the estimation of carbon mono oxide ...

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  14. Arrange the following oxoacids of chlorine in increasing order of acid...

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  15. Why does fluorine not play the role of a central atom in interhalogen ...

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  16. Fluorine exhibit only – 1 oxidation state whereas other halogens exhib...

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  17. ClF(3) exists but FCl(3) does not. Why ?

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  18. Despite lower value of its electron gain enthalpy with negative sign, ...

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  19. ClF(3) molecule has a bent T-shaped structure and not a trigonal plana...

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  20. What happens when NaCl is heated with H(2)SO(4) in the presence of MnO...

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