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Assertion: Be and Al have similar proper...

Assertion: Be and Al have similar properties.
Reason : Cations of Be and Al have same polarising power

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-PERIODIC PROPERTIES-LEVEL-I (MAIN) EXERCISE-IV
  1. The more basic oxide is

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  2. An element with 1s^2 2s^2 2p^6 3s^2 electronic arrangement will be for...

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  3. Diagonal relationship is present between the lighter elements of perio...

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  4. The diagonal relationship phenomenon is not observed after

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  5. The polarising power of which of the following pair is similar

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  6. Which of the following oxide is amphoteric?

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  7. Assertion: Be and Al have similar properties. Reason : Cations of Be...

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  8. Assertion: Li generally forms covalent compounds Reason : Li^+ ion ...

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  9. Assertion:As2O3 and Sb2O3 are amphoteric in nature Reason : As and ...

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  10. Assertion: Lithium resembles magnesium in its properties Reason: Th...

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  11. Some statements are given. Among them the correct statements are (a...

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  12. Elements X, Y and Z have atomic numbers 19, 37 and 55 respectively. Wh...

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  13. The statement that is false for the long form of the periodic table is

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  14. The compound of vanadium has magnetic moment of 1.73 BM. The vanadium ...

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  15. The frequency of the characterstic X ray of K(alpha) line of metal tar...

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  16. (IE)1 and (IE)2 of Mg((g)) are 740, 1540 kJ mol^(-1) . Calculate perce...

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  17. Use (IE) and (EA) listed below to determine whether the following proc...

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  18. If Aufbau rule is not followed, K - 19. will be placed in

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  19. M((g)) to M((g))^(+) + e^(-) , DeltaH=100 eV , M((g)) to M((g))^(2+) +...

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  20. AB is predominantly ionic as A^+ B^- if

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