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 26 of 27
- A. Orbitals of f-subshell
- B. Orbital's of d-sub shell
- C. Orbitals of p-subshell
- D. Both A and B
Explanation: This option is correct because it covers both option A and option B which are true.
Correct answer: Both A and B- A. Ionization state
- B. Oxidation state
- C. Electronic configuration
- D. Formation of complexes
Explanation: Lanthanides and actinides are both transition elements and form complexes.
Correct answer: Formation of complexes- A. Na
- B. Co
- C. Ba
- D. Ra
Explanation: "Cobalt" shows variable transition states and has a partially filled d-orbital therefore it is a transition element hence the answer is B.
Correct answer: Co- A. 48
- B. 32
- C. 58
- D. 28
Explanation: There are "38" d-block elements that show variable oxidation states and have partially filled d-orbitals hence the answer is A.
Correct answer: 48- A. Diamagnetic
- B. Paramagnetic
- C. Good conductor
- D. Ferromagnetic
Explanation: Compounds which have one or more unpaired electrons are attracted to poles of magnets and such compounds are called paramagnetic…
Correct answer: Paramagnetic- A. Cr
- B. Mn
- C. Fe
- D. All of these
Explanation: The presence of unpaired electrons causes a molecule to be paramagnetic.
Correct answer: Cr- A. Molecular
- B. Ionic
- C. Covalent
- D. Metallic
Explanation: Explanation:Electron gas theory was proposed by Drude and Loren. It helps explain the bonding in metals.
Correct answer: Metallic- A. Zn, Cd, Pb
- B. Zn, Cd, Hg
- C. Zn, Cd, Ba
- D. Zn, Cd, Bi
Explanation: Explanation:In modern periodic table, the elements in group ll-B are Zn, Cd, and Hg. This option is not correct.
Correct answer: Zn, Cd, Hg- A. d-orbital
- B. s-orbital
- C. p-orbital
- D. None of the above
Explanation: Explanation:The color of the transition metal ions/compounds is due to the electrons present in d-orbital.
Correct answer: d-orbital- A. Unpaired electrons
- B. Paired electrons
- C. Protons
- D. Neutrons
Explanation: A is correct as the presence of unpaired electrons results in a weak attraction to magnets.An unpaired electron has a magnetic dipole…
Correct answer: Unpaired electrons- A. Central metal ion
- B. Water molecule
- C. Complex ion
- D. Outer anion
Explanation: The central metal ion has the coordination number 4. To bring the electrons from lower to higher energy levels, the photon is absorbed and…
Correct answer: Central metal ion- A. Linear
- B. Square planar
- C. Tetrahedral
- D. Octahedral
Explanation: The cobalt ion is in +3 oxidation state and has an electronic configuration of 3d6.
Correct answer: Octahedral- A. Lanthanides
- B. Transition elements
- C. Rate gases
- D. Actinides
Explanation: Actinides are a series of chemical elements that span from atomic number 89 (actinium) to 103 (lawrencium) on the periodic table.
Correct answer: Actinides- A. Scandium family
- B. Iron family
- C. Titanium family
- D. Beryllium family
Explanation: Beryllium (Be) and its family, which includes elements such as magnesium and calcium, are not transition metals.
Correct answer: Beryllium family- A. 2
- B. 3
- C. 4
- D. 5
Explanation: The charge on EN is 0. The charge on the water is 0, the charge on CN is -1, and the charge on the complex is +2.
Correct answer: 3- A. Zn2
- B. Cu2
- C. Fe
- D. Ba+2
Explanation: Reaction is CuSO4+2NH4OH----> (NH4)2SO4 +Cu(OH)2 The solution contains Cu2+ ions.
Correct answer: Cu2- A. red
- B. blue
- C. orange
- D. black
Explanation: Nickel bis(dimethyl glyoximate) is the coordination complex with a bright red colour.
Correct answer: red- A. +2
- B. +5
- C. +7
- D. +8
Explanation: The highest oxidation state of manganese in its compounds is +7. In this oxidation state, manganese forms compounds like potassium…
Correct answer: +7- A. 1s2 2s2 2p6 3s2 3p6 3d8 4s2
- B. 1s2 2s2 2p6 3s2 3p6 3d7 4s2 4p1
- C. 1s2 2s2 2p6 3s2 3p6 3d6 4s2 4p2
- D. 1s2 2s2 2p6 3s2 3p6 3d6 4s1 4p3
Explanation: The correct electronic configuration for Nickel (28) is 1s2 2s2 2p6 3s2 3p6 3d8 4s2.
Correct answer: 1s2 2s2 2p6 3s2 3p6 3d8 4s2- A. Unpaired d Electrons
- B. Unpaired p electrons
- C. Unpaired f electrons
- D. Paired up d electrons
Explanation: Transition elements exhibit variable oxidation states due to the involvement of their ns and (n-1) d electrons.
Correct answer: Unpaired d Electrons