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Assertion (A) : In Group 16, oxygen has ...

Assertion (A) : In Group 16, oxygen has highest electron affinity.
Reason (R ) : Oxygen has the smallest atomic radius in the group.

A

Both A and R true and R is the correct explanation of A

B

Both A and R true and R is not a correct explanation of A

C

A is true but R is false

D

A is false but R is true

Text Solution

Verified by Experts

The correct Answer is:
B
Assertion. In group 16, sulphur has the highest electron affinity.
Reason. It is due to relatively compact 2p-subshell in which the electron enters in oxygen.
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DINESH PUBLICATION-THE OXYGEN FAMILY-REASON ASSERTION
  1. Assertion (A) : In Group 16, oxygen has highest electron affinity. R...

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  2. Assertion (A) : When KBr is heated with conc. H2SO4, HBr is displaced....

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  3. Assertion (A) : When KI is heated with conc. H2SO4, I2 and not HI is p...

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  4. Assertion (A) : H2S is more acidic than H2O. Reason (R) :H-S bond is...

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  5. Assertion (A) : Among the hydrides of group 16, water has the lowest m...

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  6. Assertion (A) : When a test tube containing sulphur (m.p. 387.5 K) at ...

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  7. Assertion (A) : Ordinary sulphur exists as a planar eight membered rin...

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  8. Assertion (A) : BaCl2 (aq) gives white ppt. of BaS with a solution con...

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  9. Assertion (A) : Conc. H2SO4 cannot be used to prepare HI from KI. Re...

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  10. Assertion (A) : When NaCl(s) is heated with conc. H2SO4, Cl2 is produc...

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  11. Assertion (A) : Dinegative anion of oxygen (O^(2-)) is quite common bu...

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  12. Assertion: Reaction of SO(2) and H(2)S in the presence of Fe(2)O(3) ca...

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  13. Statement -1 : Ozone is a powerful oxidising agent in comparison to O(...

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  14. Assertion (A) The O-O bond length in H(2)O(2) is shorter than that in ...

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  15. Assertion : All F - S - F angle in SF(4) are greater than 90^(@) but ...

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  16. Assertion: SiF(6)^(2-) is known but SiCl(6)^(2-) is not. Reason: Siz...

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  17. Assertion (A) : SeCl4 does not have a tetrahedral structure. Reason ...

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