Transition and Inner Transition Elements Additional Practice Test

12th Standard Chemistry — Transition and Inner Transition Elements: Additional Online Practice Test

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According to the periodic classification, which groups in the modern periodic table are occupied by transition metals?

A.Groups 1 to 2 B.Groups 3 to 12 C.Groups 13 to 18 D.Groups 1 to 18

What is the general outer electronic configuration of d-block elements, where 'n' represents the principal quantum number of the outermost shell?

A.\((n-1)d^{1-10} ns^{1-2}\) B.\((n-1)d^5 ns^1\) C.\((n-1)d^{10} ns^2\) D.\(nf^{1-14} (n-1)d^{1-10} ns^2\)

Which transition metal is recognized as having the highest electrical conductivity of all known elements at room temperature?

A.Copper B.Gold C.Silver D.Aluminum

In the 3d transition series, why does the atomic radius remain nearly constant from chromium to copper?

A.Increased shielding by 4s electrons B.Decrease in nuclear charge C.Balancing of increased nuclear charge by 3d-4s electron repulsion D.Absence of d-electrons

Which element in the 3d series exhibits the highest number of different oxidation states?

A.Scandium B.Chromium C.Manganese D.Iron

Why are the standard reduction potential (\(E^0\)) values for Manganese (\(Mn^{2+}/Mn\)) and Zinc (\(Zn^{2+}/Zn\)) more negative than expected from the general trend?

A.High ionization enthalpy B.Stability of half-filled (\(d^5\)) and completely filled (\(d^{10}\)) configurations C.Low metallic bonding D.Small atomic size

Using the spin-only formula, what is the calculated magnetic moment for a transition metal ion containing three unpaired electrons?

A.1.73 BM B.2.83 BM C.3.87 BM D.4.90 BM

Which type of catalyst is specifically used in the industrial process to convert acetaldehyde into acetic acid?

A.Iron B.Vanadium pentoxide C.Rhodium or Iridium complex D.Ziegler-Natta catalyst

According to the Hume-Rothery rules for forming a substitute alloy, the difference between the atomic radii of the solvent and solute must be less than what percentage?

A.5% B.10% C.15% D.25%

Q10

Which of the following properties is characteristic of interstitial compounds formed by transition metals?

A.They are always stoichiometric B.They have lower melting points than pure metals C.They are chemically very reactive D.They are hard and show high electrical conductivity

Q11

What is the oxidation state of manganese in the higher oxide \(Mn_2O_7\), which is known to be covalent and acidic?

A.+2 B.+4 C.+6 D.+7

Q12

What is the general electronic configuration for the lanthanoid series of inner transition elements?

A.\([Xe] 4f^{1-14} 5d^{0-1} 6s^2\) B.\([Rn] 5f^{1-14} 6d^{0-2} 7s^2\) C.\([Xe] 4f^1 5d^1 6s^2\) D.\([Xe] 5d^{1-10} 6s^2\)

Q13

What is the primary cause of the gradual decrease in atomic and ionic radii observed across the lanthanoid series?

A.Increase in number of shells B.Effective shielding of 4f electrons C.Poor shielding effect of 4f electrons D.Decrease in nuclear charge

Q14

Which of the following actinoid elements are capable of exhibiting the highest oxidation state of +7?

A.Thorium and Uranium B.Neptunium and Plutonium C.Americium and Curium D.Californium and Einsteinium

Q15

Compared to lanthanoids, why do actinoids show a greater tendency to form coordination complexes?

A.Larger ionic size B.Higher binding energy of 5f orbitals C.Lower binding energy of 5f orbitals and higher ionic charge D.Lack of unpaired electrons

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About this Transition and Inner Transition Elements test

This free online practice test covers Transition and Inner Transition Elements from the 12th Standard Chemistry (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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