Solved papers for JEE Main & Advanced AIEEE Solved Paper-2009

done AIEEE Solved Paper-2009 Total Questions - 2

• question_answer1) Knowing that the Chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect?     AIEEE  Solved  Paper-2009
  A)
  Because of the large size of the Ln (III) ions the bonding in its compounds is predominantly ionic in character.
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  B)
  The ionic sizes of Ln (III) decrease in general with increasing atomic number.
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  C)
  Ln (III) compounds are generally colourless
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  D)
  Ln (III) hydroxides are mainly basic in character.
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• question_answer2) In context with the transition elements, which of the following statements is incorrect?     AIEEE  Solved  Paper-2009
  A)
  In addition to the normal oxidation states, the zero oxidation state is also shown by these elements in complexes.
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  B)
  In the highest oxidation states, the transition metal show basic character and form cationic complexes.
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  C)
  In the highest oxidation states of the first five transition element (Sc to Mn), all the 4s and 3d electrons are used for bonding.
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  D)
  Once the \[{{d}^{5}}\] configuration is exceeded, the tendency to involve all the 3d electrons in bonding decreases.
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