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Chapters
Chapter 2: p-Block Elements - I
Chapter 3: p-Block Elements - II
Chapter 4: Transition and Inner Transition Elements
Chapter 5: Coordination Chemistry
Chapter 6: Solid State
Chapter 7: Chemical Kinetics
Chapter 8: Ionic Equilibrium
Chapter 9: Electro Chemistry
Chapter 10: Surface Chemistry
Chapter 11: Hydroxy Compounds and Ethers
Chapter 12: Carbonyl Compounds and Carboxylic Acids
Chapter 13: Organic Nitrogen Compounds
Chapter 14: Biomolecules
Chapter 15: Chemistry in Everyday Life
Chapter 4: Transition and Inner Transition Elements
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Chemistry Volume 1 and 2 Answers Guide Chapter 4 Transition and Inner Transition Elements Evaluation [Pages 125 - 129]
Choose the best answer:
Sc (Z = 21) is a transition element but Zinc (z = 30) is not because
both Sc3+ and Zn2+ ions are colourless and form white compounds
in case of Sc, 3d orbital are partially filled but in Zn these are completely filled
last electron as assumed to be added to 4s level in case of zinc
both Sc and Zn do not exhibit variable oxidation states
Which of the following d-block element has half-filled penultimate d sub shell as well as half-filled valence sub shell?
Cr
Pd
Pt
none of these
Among the transition metals of 3d series, the one that has highest negative `("M"^(2+)/"M")` standard electrode potential is
Ti
Cu
Mn
Zn
Which one of the following ions has the same number of unpaired electrons as present in V3+?
Ti3+
Fe3+
Ni2+
Cr3+
The magnetic moment of Mn2+ ion is ____________.
5.92 BM
2.80 BM
8.95 BM
3.90 BM
The catalytic behaviour of transition metals and their compounds is ascribed mainly due to ____________.
their magnetic behaviour
their unfilled d orbitals
their ability to adopt variable oxidation states
their chemical reactivity
The correct order of increasing oxidizing power in the series
\[\ce{VO^+_2 < Cr2O^{2-}7 < MnO^-_4}\]
\[\ce{Cr2O^{2-}_7 < VO^+_2 < MnO^-_4}\]
\[\ce{Cr2O^{2-}_7 < MnO^-_4 < VO^+_2}\]
\[\ce{MnO^-_4 < Cr2O^{2-}_7 < VO^+_2}\]
In acid medium, potassium permanganate oxidizes oxalic acid to ____________.
oxalate
Carbon dioxide
acetate
acetic acid
Which of the following statements is not true?
on passing H2S, through acidified K2Cr2O7 solution, a milky colour is observed.
Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
K2Cr2O7 solution in acidic medium is orange in colour
K2Cr2O7 solution becomes yellow on increasing the PH beyond 7
Permanganate ion changes to ____________ in acidic medium.
\[\ce{MnO^{2-}_4}\]
Mn2+
Mn3+
MnO2
How many moles of I2 are liberated when 1 mole of potassium dichromate react with potassium iodide?
1
2
3
4
The number of moles of acidified KMnO4 required to oxidize 1 mole of ferrous oxalate (FeC2O4) is ____________.
5
3
0.6
1.5
Which one of the following statements related to lanthanons is incorrect?
Europium shows +2 oxidation state.
The basicity decreases as the ionic radius decreases from Pr to Lu.
All the lanthanons are much more reactive than aluminium.
Ce4+ solutions are widely used as oxidising agents in volumetric analysis.
Which of the following lanthanoid ions is diamagnetic?
Eu2+
Yb2+
Ce2+
Sm2+
Which of the following oxidation states is most common among the lanthanoids?
4
2
5
3
Assertion: Ce4+ is used as an oxidizing agent in volumetric analysis.
Reason: Ce4+ has the tendency of attaining +3 oxidation state.
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason are false.
The most common oxidation state of actinoids is ____________.
+2
+3
+4
+6
The actinoid elements which show the highest oxidation state of +7 are ____________.
Np, Pu, Am
U, Fm, T
U, Th, Md
Es, No, Lr
Which one of the following is not correct?
La(OH)2 is less basic than Lu(OH)3
In lanthanoid series ionic radius of Ln3+ ions decreases
La is actually an element of transition metal series rather than lanthanide series
Atomic radii of Zr and Hf are same because of lanthanide contraction
Answer the following questions:
What are transition metals? Give four examples.
Explain the oxidation states of 4d series elements.
What are inner transition elements?
Justify the position of lanthanides and actinides in the periodic table.
What are actinoids? Give three examples.
Describe the preparation of potassium dichromate.
What is lanthanoid contraction and what are the effects of lanthanoid contraction?
Complete the following.
\[\ce{MnO^2-_4 + H^+ ->?}\]
Complete the following.
\[\ce{C6H5CH3 ->[acidified][KMnO4]?}\]
Complete the following.
\[\ce{MnO^-_4 + Fe^2+ ->?}\]
Complete the following.
\[\ce{KMnO4 ->[\Delta][Red hot]?}\]
Complete the following.
\[\ce{Cr2O^2-_7 + I^- + H^+ ->?}\]
Complete the following.
\[\ce{Na2Cr2O7 + KCl ->?}\]
What are interstitial compounds?
Calculate the number of unpaired electrons in Ti3+, Mn2+ and calculate the spin only magnetic moment.
Write the electronic configuration of Ce4+ and Co2+.
Explain briefly how +2 states become more and more stable in the first half of the first-row transition elements with increasing atomic numbers.
Which is more stable? Fe3+ or Fe2+ – explain.
Explain the variation in `"E"_ ("M"^(3+)//"M"^(2+))^0` 3d series.
Compare lanthanoids and actinoids.
Explain why Cr2+ is strongly reducing while Mn3+ is strongly oxidizing.
Compare the ionization enthalpies of the first series of the transition elements.
Actinoid contraction is greater from element to element than the lanthanoid contraction, why?
Out of Lu(OH)3 and La(OH)3 which is more basic and why?
Why europium (II) is more stable than Cerium (II)?
Why do zirconium and Hafnium exhibit similar properties?
Which is the stronger reducing agent Cr2+ or Fe2+?
The `"E"_("M"^(2+)//"M")^0` value for copper is positive. Suggest a possible reason for this.
Describe the variable oxidation state of 3d series elements.
Which metal in the 3d series exhibits +1 oxidation state most frequently and why?
Why first ionization enthalpy of chromium is lower than that of zinc?
Transition metals show high melting points why?
Chapter 4: Transition and Inner Transition Elements
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Chemistry Volume 1 and 2 Answers Guide chapter 4 - Transition and Inner Transition Elements
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Chemistry Volume 1 and 2 Answers Guide chapter 4 (Transition and Inner Transition Elements) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Tamil Nadu Board of Secondary Education Class 12th Chemistry Volume 1 and 2 Answers Guide solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Class 12th Chemistry Volume 1 and 2 Answers Guide chapter 4 Transition and Inner Transition Elements are Position of d- Block Elements in the Periodic Table, Electronic Configuration, General Trend in Properties, Some Important Compounds of Transition Elements, The f-Block Elements (Inner-transition Elements).
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