Free Transition Elements MCQs with Answers
531 Transition Elements MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
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Read the Transition Elements notesFree MDCAT chapter notes with key terms531 questions · page 13 of 27
- A. Potassium tetrahydroxyzinc (II)
- B. Potassium tetrahydroxozincate (II)
- C. Potassium tetrahydroxyzincate (VI)
- D. Potassium hydroxyzinc (II)
Explanation: The chemical name of K2[Zn(OH)4] is derived by naming the cation first, which is Potassium.
Correct answer: Potassium tetrahydroxozincate (II)- A. All paired electrons
- B. All unpaired electrons
- C. Few unpaired electrons.
- D. Unequal electrons and protons
Explanation: Paramagnetic elements are those with one or more unpaired electrons. These unpaired electrons create a net magnetic moment, making the…
Correct answer: Few unpaired electrons.- A. Trichlorotetra amine chromium (III)
- B. Tetraamminedichlorochromium (III) chloride
- C. Dichloro Tetra ammonia chromium (III) chloride
- D. Dichlorotetra amine chromate (III) chloride
Explanation: The correct IUPAC name for the complex [Cr(NH3)4Cl2]Cl is Tetraamminedichlorochromium (III) chloride.
Correct answer: Tetraamminedichlorochromium (III) chloride- A. dxy, dyz
- B. dyz, dzx
- C. dx2-y2, dz2
- D. dx2, d
Explanation: In an octahedral crystal field, the five degenerate d-orbitals split into two distinct groups due to ligand interactions: the t2g set…
Correct answer: dx2-y2, dz2- A. Cu, Ag, Au
- B. Zn, Cd, Hg
- C. Au, Ag, Zn
- D. Li, Na, K
Explanation: The coinage metal comprise, at a minimum, those metallic chemical elements which have historically been used as components in alloys used…
Correct answer: Cu, Ag, Au- A. Inner transition elements
- B. Outer transition metals
- C. Both
- D. None
Explanation: The f block elements are the lanthanides and actinides and are called the 'inner transition' elements because of their placement in the…
Correct answer: Inner transition elements- A. Potassium tetra cyano cuprate
- B. Coordination number is 2
- C. The ligand is positively charged
- D. Central atom is present in the anionic sphere
Explanation: The central atom 'Cu' is present in the complex that is forming the anion part of the given salt.
Correct answer: Central atom is present in the anionic sphere- A. Unity
- B. Positive
- C. Zero
- D. Negative
Explanation: The oxidation number of an element in its free state is always zero.
Correct answer: Zero- A. 5d7
- B. 4d9
- C. 5d8
- D. 5d10
Explanation: C is the correct answer. The electronic configuration of Au in its neutral state is [Xe] 4f14 5d10 6s1.
Correct answer: 5d8- A. Color
- B. Complex formation
- C. Use as catalyst
- D. All of these
Explanation: Correct option is D. The answer is all of these. Transition metals are known for their characteristic colors, their ability to form…
Correct answer: All of these- A. More melting point
- B. More electrons
- C. Variable oxidation state
- D. Higher binding energies
Explanation: Correct option is D. The d-orbital of transition elements which contain the unpaired electrons may overlap and form covalent bonds.
Correct answer: Higher binding energies- A. Zn, Cd, Hg
- B. Fe, Ru, Os
- C. Mn, Te, Re
- D. Cr, Mo, W
Explanation: Correct option is D. Transition elements of group VI are: chromium (Cr), molybdenum (Mo), tungsten (W), and seaborgium (Sg).
Correct answer: Cr, Mo, W- A. Fe
- B. Mg
- C. Ca
- D. C
Explanation: Iron(Fe) is the most abundant transition metal and the transition metal most widely used in industries as a catalyst and to manufacture…
Correct answer: Fe- A. Increases till Mn and decreases till Zn
- B. Remains unchanged
- C. Decreases
- D. Increase
Explanation: Unpaired electron trend of transition elements increases till Mn and decreases till Zn.
Correct answer: Increases till Mn and decreases till Zn- A. Tetrahedral
- B. Trigonal bipyramidal
- C. Octahedral
- D. Square planar
Explanation: For molecules and polyatomic ions, the coordination number of an atom is determined by simply counting the other atoms to which it is…
Correct answer: Octahedral- A. I
- B. Fe
- C. Ca
- D. Mg
Explanation: Out of the given options, Fe is the only transition element. Ca and Mg are alkaline earth metals whereas Iodine (I) is a halogen.
Correct answer: Fe- A. Red-Blue
- B. Blue
- C. Colorless
- D. Green
Explanation: The ion Sc+3 is colorless, Sc+3 is a 3d0 system. There are no d electrons; hence, d-d transition is not possible.
Correct answer: Colorless- A. Intervening electrons
- B. d-shell
- C. Screening effect
- D. Shielding effect
Explanation: Due to the poor shielding effect of d-electrons, the outer electrons experience a more effective nuclear charge.
Correct answer: Shielding effect- A. 3A
- B. 3B
- C. 2B
- D. 1B
Explanation: Copper, silver and gold are coinage metals. They belong to group 1B of the periodic table.
Correct answer: 1B- A. Triangular
- B. Trigonal pyramidal
- C. Tetrahedral
- D. Octahedral
Explanation: Transition metal complexes with a coordination number of 6 show octahedral geometry.
Correct answer: Octahedral