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Assertion (A): The size decreases as Pb ...

Assertion (A): The size decreases as `Pb gt Pb^(+2) gt Pb^(+4)`
Assertion (R): Z/e increases i.e force of attraction towards nucleous increases.

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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NARAYNA-PERIODIC TABLE -All Questions
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  4. Assertion (A): Ionisation potential across a period is Li lt B lt Be l...

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

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

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

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

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  11. Match the following The correct match is

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  13. Match the following Match correc match is

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

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

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

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

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