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Statament-1: Mn atom loses ns electrons...

Statament-1: Mn atom loses ns electrons first during ionisation as compared to (n-1) d-electrons.
Statement-1: The effective nuclear charge experienced by (n-1) d elctrons is greater than that by ns electrons.

A

If both (A) and (R) are correct and (R) is the correct explanation of (A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If (A) is incorrect but (R) is correct.

Text Solution

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The correct Answer is:
a
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CENGAGE CHEMISTRY ENGLISH-D AND F BLOCK ELEMENTS-Exercises Assertion Reasoning
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  7. Statement-1: Tungsten has very high melting point Statament-2: Tungs...

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  8. Assertion: Manganese shows a number of oxidation states. Reason: The...

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  9. Assertion: Equivalent mass of KMnO4 is same in the neutral as well as ...

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  10. Assertion: In Cr2O7^(2-) ion, all the Cr-O bond lengths are equal. R...

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  11. Assertion: In any transition series the magnetic moment of M^(2+) io...

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  12. Assertion: MnO is basic whereas Mn2O7 is acidic. Reason: Higher the ...

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  13. Assertion : Ce^(4+) is used as an oxidising agent in volumetric analys...

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  14. Statament-1: Mn atom loses ns electrons first during ionisation as co...

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  15. Assertion: Actinoids show greater number of oxidation states than lant...

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  16. Assertion : E^(@)" for"Mn^(3+)//Mn^(2+) is more positve than Cr^(3+)//...

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  17. Assertion: The spin only magnetic moment of Sc^(3+) is 1.73 BM. Reas...

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  18. Assertion: An aqueous solution of FeCl3 is acidic. Reason: It is due...

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  19. Assertion: La should be the f-block element according to Aufbau princi...

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  20. Assertion: Mercurous compounds are diamagnetic. Reason: Two Hg^(o+) ...

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