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S-Block Elements Test - 24

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S-Block Elements Test - 24
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  • Question 1
    4 / -1
    Which are correct statements for Be and Al ?
  • Question 2
    4 / -1
    Identify the correct statement ?
  • Question 3
    4 / -1
    Statement-1 : Alkali metals dissolve in ammonia to give blue solutions.
    Statement-2 : Alkali metals in liquid ammonia give solvated species of the type [M(NH3)x]+
  • Question 4
    4 / -1
    Statement-1 Sodium metal is softer than potassium metal
    Statement-2 Metalic bonding in Potassium is weaker than in Sodium.
  • Question 5
    4 / -1
    Statement-1 Be(OH)2 is soluble in HCl and NaOH
    Statement-2 Be(OH)2 is amphoteric in nature
  • Question 6
    4 / -1
    Statement-1 : Be Forms [BeF4]2- but Al forms [AlF6]3-
    Statement-2 Be does not have d–orbitals in the Valence shell but Al has.
  • Question 7
    4 / -1
    Statement -1 Li2CO3 and Na2CO3 are thermally unstable.
    Statement - 2 Both the carbonates are salts of large cations and large anions.
  • Question 8
    4 / -1
    Statement - 1 Metallic character of alkali metals increases on going down a group from top to bottom.
    Statement - 2 Ionisation enthalpy of alkali metals increases on going down from top to bottom.
  • Question 9
    4 / -1
    Statement - 1 Superoxides of alkali metals are diamagnetic.
    Statement - 2 Superoxides contain the ion O2– which has one unpaired electron.
  • Question 10
    4 / -1
    Statement - 1 Alkali metals do not impart colour to the flame. Statement - 2 Their ionization enthalpies are very low.
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