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Assertion (A): Chemistry of Actinoids is...

Assertion (A): Chemistry of Actinoids is more complicated than Lanthanoids
Assertion (R): Actionid elements are radio active

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

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The chemistry of the early actinoids is more complicated than the corresponding lanthanoids

Assertion:The chemistry of the early actinoids is more comlicated than the corresponding lanthanoids. Reason:Outer electronic configuration of actinoids is (n-2)f^(1-14)(n-1)d^(0-1)ns^(2) .

Assertion: Actinoids show greater number of oxidation states than lanthanoids. Reason: Actinoids are radioactive.

Why actinoid contraction is more than lanthanoid contraction

(a) How would you account for the following: (i) The chemistry of actinoids is more complicated as compared to lanthanoids. (ii) Transition metals form complex compounds. (b) Complete the following equation: 2MnO_4^(-) + 6H^(+) + 5SO_3^(2-) to

Assertion (A) Actinoids form relatively less stable complexes as compared to lanthanoids. Reason (R ) Actinoids can utilise their 5f orbitals alongwith 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.

Assertion (A): Electron affinity of chlorine is greater than Fluorine Assertion (R): Flourine is more electronegative element

NARAYNA-PERIODIC TABLE -All Questions
  1. Assertion (A): The atomic radius of inert gases is higher than halogen...

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  2. Assertion (A): In ionisation potential Vs atomic number curve peaks ar...

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  3. Assertion (A): Chemistry of Actinoids is more complicated than Lanthan...

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  4. Assertion (A): The size decreases as Pb gt Pb^(+2) gt Pb^(+4) Assert...

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  5. Assertion (A): Ionisation potential across a period is Li lt B lt Be l...

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  6. Assertion (A): F^(-1) ion is larger in size compared of F Assertion ...

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  7. Assertion (A): Ionisation potential of K is numerically the same as el...

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  8. Statement-1: Generally, ionisation enthalpy increases from left to rig...

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  9. Assertion: Boron has a smaller first ionisation enthalpy than berylliu...

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  10. Assertion: Electron gain enthalpy always becomes less negative as we g...

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  12. Match the following The correct match is

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  13. Match the following columns

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  14. Match the following Match correc match is

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  15. Match the following in view of diagonal relation The correct matc...

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  16. Match the atomic numbers given in column I with the block in which the...

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  17. Match the atomic numbers of the elements given in column I with the pe...

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  18. Match the list-I and List-II and select the correct answer using the c...

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  19. Ionization energies of five elements of same period in kcal/mol are gi...

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  20. Ionization energies of five elements of same period in kcal/mol are gi...

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