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Assertion (A): Be and Al have similar pr...

Assertion (A): Be and Al have similar properties
Assertion (R): Cations of Be and Al have same polarizing power

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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Explore conceptually related problems

Directions : In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Be and Al show some similar properties. Reason (R) : The metallic radius of Be is less than the metallic radius of Al.

Weed killers have properties similar to

Assertion (A): Li forms covalent compounds Assertion (R): Li^(+) ion is small and has high polarizing power

Assertion : Cats and dogs have some similarities. Reason : Cats and dogs belong to the same Family Canidae.

Assertion (A) : B_(2)H_(6),SiH_(6) are said to have similar structure . Reason (R) : They have same number of sigma and pi bonds.

Elements beloging to the same group have similar properties because

Assertion Be shows similarities with Al. Reason Be^(2+) and Al^(3+) have same ionic radii.

Assertion : L//R and CR both have same dimensions Reason L//R and CR both have dimensions of time

NARAYNA-PERIODIC TABLE -All Questions
  1. Assertion (A): According to Mendeleeff, periodic properties of element...

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  2. Assertion (A): The transition metal ions are generally paramagnetic in...

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  3. Assertion (A): Be and Al have similar properties Assertion (R): Cati...

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  4. Assertion (A): Li forms covalent compounds Assertion (R): Li^(+) ion...

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  5. Assertion (A): The nagtive ion is always larger than its atom Assert...

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  6. Assertion (A): The second ionisation energy of 'O' is greater than tha...

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  7. Assertion: Shielding effect increases as we go down the group. Reaso...

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  8. Assertion (A): Electron affinity of Flourine is less than that of chlo...

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  9. Assertion (A): The second electron affinity of oxygen is endothermic. ...

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  10. Assertion (A): The size decreases in the order O^(2-) gt Mg^(2+) gt Al...

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  11. Assertion (A): Each d-block series contains ten elements Assertion (...

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  12. Assertion (A): The first ionisation energy of B is less than that of B...

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  13. Assertion (A): The ionic size of Mg^(2+) is larger than Al^(3+) Asse...

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  14. Assertion (A): The second electron affinity of oxygen is exothermic. ...

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  15. Assertion (A): Al(2)O(3) dissolves in both NaOH and HCl Assertion (R...

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  16. Assertion (A): Cu^(+2) paramagnatic ltbr. Assertion (R): All the orbit...

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  17. Assertion (A): Zn is not a transition element. Assertion (R): Elemen...

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  18. Assertion (A): The transition metal ions are generally paramagnetic in...

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  19. Assertion (A): Electron affinity of chlorine is greater than Fluorine ...

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  20. Assertion (A): Ionisation potential of 'N' is greater than 'O' Asser...

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