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Chemistry · Textbook solutions

Transition and Inner Transition Elements

Every solved example, exercise, and miscellaneous question — in the order the textbook teaches them. Plus every board question asked from this chapter. · 36 questions

8. Transition and Inner Transition Elements — worked examples

2 q

Solved Examples

Worked · 2
  1. Solved Problem (p.172)
    Calculate the spin only magnetic moment of divalent cation of a transition metal with atomic number 25.
  2. Solved Problem (p.184)
    Which of the following will have highest fourth ionization enthalpy IE4\mathrm{IE_4}? La4⊕\mathrm{La^{4\oplus}}, Gd4⊕\mathrm{Gd^{4\oplus}}, Lu4⊕\mathrm{Lu^{4\oplus}}.

Exercise

34 q

1. Choose the most correct option.

Practice · 12
  1. Choose the most correct option.
    Ex Q.1 (i)
    Which one of the following is diamagnetic
    1. A.
      Cr2⊕\mathrm{Cr^{2\oplus}}
    2. B.
      Fe3⊕\mathrm{Fe^{3\oplus}}
    3. C.
      Cu2⊕\mathrm{Cu^{2\oplus}}
    4. D.
      Sc3⊕\mathrm{Sc^{3\oplus}}
  2. Ex Q.1 (ii)
    Most stable oxidation state of Titanium is
    1. A.
      +2+2
    2. B.
      +3+3
    3. C.
      +4+4
    4. D.
      +5+5
  3. Ex Q.1 (iii)
    Components of Nichrome alloy are are
    1. A.
      Ni, Cr, Fe
    2. B.
      Ni, Cr, Fe, C
    3. C.
      Ni, Cr
    4. D.
      Cu, Fe
  4. Ex Q.1 (iv)
    Most stable oxidation state of Ruthenium is
    1. A.
      +2+2
    2. B.
      +4+4
    3. C.
      +8+8
    4. D.
      +6+6
  5. Ex Q.1 (v)
    Stable oxidation states for chromium are
    1. A.
      +2, +3+2,\ +3
    2. B.
      +3, +4+3,\ +4
    3. C.
      +4, +5+4,\ +5
    4. D.
      +3, +6+3,\ +6
  6. Ex Q.1 (vi)
    Electronic configuration of Cu and Cu+1\mathrm{Cu^{+1}}
    1. A.
      3d10,4s0\mathrm{3d^{10}, 4s^0}; 3d9,4s0\mathrm{3d^9, 4s^0}
    2. B.
      3d9,4s1\mathrm{3d^9, 4s^1}; 3d94s0\mathrm{3d^9 4s^0}
    3. C.
      3d10,4s1\mathrm{3d^{10}, 4s^1}; 3d10,4s0\mathrm{3d^{10}, 4s^0}
    4. D.
      3d8,4s1\mathrm{3d^8, 4s^1}; 3d10,4s0\mathrm{3d^{10}, 4s^0}
  7. Ex Q.1 (vii)
    Which of the following have d0s0\mathrm{d^0s^0} configuration
    1. A.
      Sc3⊕\mathrm{Sc^{3\oplus}}
    2. B.
      Ti4⊕\mathrm{Ti^{4\oplus}}
    3. C.
      V5⊕\mathrm{V^{5\oplus}}
    4. D.
      all of the above
  8. Ex Q.1 (viii)
    Magnetic moment of a metal complex is 5.9 B.M. Number of unpaired electrons in the complex is
    1. A.
      2
    2. B.
      3
    3. C.
      4
    4. D.
      5
  9. Ex Q.1 (ix)
    In which of the following series all the elements are radioactive in nature
    1. A.
      Lanthanoids
    2. B.
      Actinoids
    3. C.
      d-block elements
    4. D.
      s-block elements
  10. Ex Q.1 (x)
    Which of the following sets of ions contain only paramagnetic ions
    1. A.
      Sm3⊕\mathrm{Sm^{3\oplus}}, Ho3⊕\mathrm{Ho^{3\oplus}}, Lu3⊕\mathrm{Lu^{3\oplus}}
    2. B.
      La3⊕\mathrm{La^{3\oplus}}, Ce3⊕\mathrm{Ce^{3\oplus}}, Sm3⊕\mathrm{Sm^{3\oplus}}
    3. C.
      La3⊕\mathrm{La^{3\oplus}}, Eu3⊕\mathrm{Eu^{3\oplus}}, Gd3⊕\mathrm{Gd^{3\oplus}}
    4. D.
      Ce3⊕\mathrm{Ce^{3\oplus}}, Eu3⊕\mathrm{Eu^{3\oplus}}, Yb3⊕\mathrm{Yb^{3\oplus}}
  11. Ex Q.1 (xi)
    Which actinoid, other than uranium, occur in significant amount naturally?
    1. A.
      Thorium
    2. B.
      Actinium
    3. C.
      Protactinium
    4. D.
      Plutonium
  12. Ex Q.1 (xii)
    The flux added during extraction of Iron from hematite are its?
    1. A.
      Silica
    2. B.
      Calcium carbonate
    3. C.
      Sodium carbonate
    4. D.
      Alumina

2. Answer the following

Practice · 11
  1. Answer the following
    Ex Q.2 (i)
    What is the oxidation state of Manganese in (i) MnO42−\mathrm{MnO_4^{2-}} (ii) MnO4−\mathrm{MnO_4^{-}} ?
  2. Ex Q.2 (ii)
    Give uses of KMnO4\mathrm{KMnO_4}
  3. Ex Q.2 (iii)
    Why salts of Sc3⊕\mathrm{Sc^{3\oplus}}, Ti4⊕\mathrm{Ti^{4\oplus}}, V5⊕\mathrm{V^{5\oplus}} are colourless ?
  4. Ex Q.2 (iv)
    Which steps are involved in manufacture of potassium dichromate from chromite ore ?
  5. Ex Q.2 (v)
    Balance the following equation (i) KMnO4+H2C2O4+H2SO4⟶MnSO4+K2SO4+H2O+O2\mathrm{KMnO_4 + H_2C_2O_4 + H_2SO_4 \longrightarrow MnSO_4 + K_2SO_4 + H_2O + O_2} (ii) K2Cr2O7+KI+H2SO4⟶K2SO4+Cr2(SO4)3+7H2O+3I2\mathrm{K_2Cr_2O_7 + KI + H_2SO_4 \longrightarrow K_2SO_4 + Cr_2(SO_4)_3 + 7H_2O + 3I_2}
  6. Ex Q.2 (vi)
    What are the stable oxidation states of plutonium, cerium, manganese, Europium ?
  7. Ex Q.2 (vii)
    Write electronic configuration of chromium and copper.
  8. Ex Q.2 (viii)
    Why nobelium is the only actinoid with +2+2 oxidation state?
  9. Ex Q.2 (ix)
    Explain with the help of balanced chemical equation, why the solution of Ce(IV) is prepared in acidic medium.
  10. Ex Q.2 (x)
    What is meant by 'shielding of electrons' in an atom?
  11. Ex Q.2 (xi)
    The atomic number of an element is 90. Is this element diamagnetic or paramagnetic?

3. Answer the following

Practice · 11
  1. Answer the following
    Ex Q.3 (i)
    Explain the trends in atomic radii of d block elements
  2. Ex Q.3 (ii)
    Name different zones in the Blast furnace. Write the reactions taking place in them.
  3. Ex Q.3 (iii)
    What are the differences between cast iron, wrought iron and steel ?
  4. Ex Q.3 (iv)
    Iron exhibits +2+2 and +3+3 oxidation states. Write their electronic configuration. Which will be more stable ? Why ?
  5. Ex Q.3 (v)
    Give the similarities and differences in elements of 3d, 4d and 5d series.
  6. Ex Q.3 (vi)
    Explain trends in ionisation enthalpies of d block elements.
  7. Ex Q.3 (vii)
    What is meant by diamagnetic and paramagnetic metal ? Give one example of diamagnetic and paramagnetic transition metal and lanthanoid metal.
  8. Ex Q.3 (viii)
    Why the ground-state electronic configurations of gadolinium and lawrentium are different than expected?
  9. Ex Q.3 (ix)
    Write steps involved in metallurgical process
  10. Ex Q.3 (x)
    Cerium and Terbium behaves as good oxidising agents in +4+4 oxidation state. Explain.
  11. Ex Q.3 (xi)
    Europium and Ytterbium behave as good reducing agents in +2+2 oxidation state explain.