Free Transition Elements MCQs with Answers

• A. 2B
• B. 3B
• C. 1B
• D. Both A and B

Explanation: Non-typical transition elements belong to groups 2B and 3B.Group 2B consists of the zinc group elements, which include zinc (Zn), cadmium…

• A. 3 sets
• B. 4 sets
• C. 5 sets
• D. 2 sets

Explanation: When d-orbitals are involved in bonding, they split into two sets of energy levels, one set has higher energy than the other.

• A. Coordinate covalent
• B. Ionic
• C. Metallic
• D. Covalent

Explanation: A coordination complex is the product of a Lewis acid-base reaction in which neutral molecules or anions (called ligands) bond to a…

• A. All
• B. +3
• C. +2
• D. +4

Explanation: Elements with d orbitals usually exhibit oxidation states ranging from +2 to +7.

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

Explanation: In KMnO4, we know that oxygen has a -2 oxidation state, and potassium has a +1 oxidation state.

• A. Sc and Zn
• B. Cu and Sc
• C. Zn and Cu
• D. Cu and Cr

Explanation: Both Cu and Cr show abnormal electronic configurations.Cu (Copper) has the electronic configuration of [Ar] 3d10 4s1 instead of [Ar] 3d9…

• A. Chelates are usually more stable than ordinary complexes
• B. Ordinary complexes are more stable than chelates
• C. Monodentate ligands form the chelates complexes
• D. Chelates have no ring structures

Explanation: Chelate ligands can form a ring with central metal. Therefore it can regulate electrons within a ring.

• A. A
• B. B
• C. C
• D. D

Explanation: The electronic configuration Mn is [Ar] 3d5 4s2. Option A is the only option that depicts this electronic configuration.

• A. Cast Iron > Wrought Iron > Steel
• B. Wrought Iron > Steel > Cast Iron
• C. Cast Iron > Steel > Wrought Iron
• D. Cast Iron < Steel > Wrought Iron

Explanation: Wrought iron is an iron alloy with a very low carbon content (less than 0.08%). Typically there is less than 0.40% carbon in most steels.

• A. +2
• B. +3
• C. -6
• D. -3

Explanation: K has a +1 charge, so K3 is +3. CN has a -1 charge, so (CN)6 is -6. So, +3 + -6 + x = 0 -3 + x = 0 x = +3 So, the oxidation state of 'Fe'…

• A. Color of ions of these metals
• B. Variable oxidation states of metals
• C. Stability associated with this configuration
• D. Complex formation tendency of metals

Explanation: Two types of electronic configurations are the most stable 1-Completely filled 2: Completely and Partially filled Example: for P subshell…

• A. Copper
• B. Cobalt
• C. Zinc
• D. Ni

Explanation: For remembering 3D series, we have a mnemonic

• A. Zinc
• B. Chromium
• C. Vanadium
• D. Manganese

Explanation: Common oxidation states of manganese are +2, +3, +4, +6, and +7, although all oxidation states from −3 to +7 have been observed.

• A. 4
• B. 7
• C. 6
• D. 5

Explanation: In the given complex six cyanide ligands are bonded to the central atom, iron.

• A. CH3COO−
• B. (CH2)2(NH2)2
• C. SCN−
• D. NO2−

Explanation: A chelating ligand is a ligand that is mostly attached to a central metal ion by bonds that are from two or more donor atoms.

• A. KMnO4
• B. MnO2
• C. MnCl2
• D. Mn2(SO4)3

Explanation: The reducing power is the ability to give electrons and reduce others. The compound having maximum oxidation number will have the zero…

• A. Lead
• B. Iron
• C. Copper
• D. Chromium

Explanation: Fe 2+ and Fe3+ ions are used as catalysts in this reaction since both the reactants are negatively charged, they repel each other, leading…

• A. -2
• B. 6
• C. 4
• D. None

Explanation: In [Co(en)2 Cl2] No. of monodentate ligand (Cl) =2 No. of bidentate ligand,(Ethylene diamine) =2 ∴ Co-ordination no. of the metal =2+2×2=6

• A. Sc
• B. Mn
• C. V
• D. Ti

Explanation: The acidic strength of oxides of different elements will depend on the tendency of oxygen atoms to accept electrons.

• A. Didentate
• B. Tridentate
• C. Tetradentate
• D. Hexadentate

Explanation: Ethylenediamine diacetate is a chemical compound with tetradentate coordination properties, not bidentate.