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Assertion: SF6 can't be hydrolysed but S...

Assertion: `SF_6` can't be hydrolysed but `SF_4` can be.
Reason: Six fluorine atoms in `SF_6` prevent the attack of `H_2O` on sulphur atom of `SF_6`

A

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion

B

If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion

C

If Assertion is correct , but Reason is incorrect

D

If both Assertion and Reason are incorrect

Text Solution

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The correct Answer is:
A
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BRILLIANT PUBLICATION-P-BLOCK ELEMENTS-LEVEL II (ASSERTION AND REASON)
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  2. Assertion : Xenon fluorides are well known and stable but the correspo...

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  3. Assertion Although PF5,PCl5 and PBr5 are known, the pentahalides of ni...

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  4. Assertion : F atom has a less negative election gain enthalpy than Cl ...

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  5. Assertion : White phosphorus is more reactive than red phosphorus. ...

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  6. Assertion: SF6 can't be hydrolysed but SF4 can be. Reason: Six fluor...

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  7. Assertion : In vapour state sulphur is paramagnetic in nature. Reas...

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  8. Assertion : Fluorine combines with sulphurto form SF6 but no other hal...

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  9. Assertion : Fluorine oxidises water to oxygen whereas chlorine and bro...

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  10. Assertion : HClO4 is a stronger acid than HClO3 Reason : Oxidation ...

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  11. Assertion : The covalence of nitrogen in N2O5 is 5. Reason : Nitrog...

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  12. Assertion: Molecular nitrogen is less reactive than molecular oxygen ...

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  13. Assertion : On cooling, the brown colour of nitrogen dioxide disappear...

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  14. Assertion : Elementary phosphorus exists in three principal allotropic...

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  15. Assertion : H-S-H bond angle in H2S is closer to 90^@ but: H-O-H bond ...

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  16. Assertion : HOF bond angle is higher than HOCI bond angle in HOX. 'R...

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  17. Assertion : Noble gases have positive electron gain enthalpy. Reaso...

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  18. Assertion : The O-O bond length in H2O2 is shorter than that of O2F2 ...

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  19. Assertion : The aqueous solution of XeF2 is powerful oxidising agent. ...

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  20. Assertion : Superoxides of alkali metals are paramagnetic. Reason :...

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