Free Shape of Ionic Crystals MCQs with Answers
30 Shape of Ionic Crystals MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Ionic crystal shape depends on the regular arrangement of oppositely charged ions in a three-dimensional lattice. The topic covers coordination number, radius ratios, lattice geometry and structures such as sodium chloride, caesium chloride and zinc sulfide, which should not be confused with the molecular shapes predicted by VSEPR theory.
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30 questions · page 1 of 2
- A. simple cubic
- B. hexagonal
- C. body centred cubic
- D. face centred cubic
Explanation: Sodium chloride crystallises in a face centred cubic arrangement in which each sodium ion is surrounded octahedrally by six chloride ions…
Correct answer: face centred cubic- A. the number of oppositely charged ions immediately surrounding it
- B. the charge on the ion
- C. the number of unit cells it belongs to
- D. the number of electrons it has lost or gained
Explanation: Coordination number counts the nearest neighbours of opposite charge, so it is six in sodium chloride and eight in caesium chloride, the…
Correct answer: the number of oppositely charged ions immediately surrounding it- A. Unidentate
- B. Bidentate
- C. Tridentate
- D. Hexadentate
Explanation: The oxalate ion, C2O4^2-, has two oxygen donor atoms that can attach to the same metal ion, forming a chelate ring.
Correct answer: Bidentate- A. H+
- B. H-
- C. Mg2+
- D. Ca2+
Explanation: An ionic crystal requires a stable lattice of oppositely charged ions, but H+ is only a proton with no electron cloud and does not form an…
Correct answer: H+- A. Solid NaCl is covalent
- B. In the solid state, there are no ions
- C. In solid NaCl. there is no migration of ions
- D. In solid NaCl, there are not electron
Explanation: Conduction of electricity occurs when there is a free-moving charge (electrons or ions), so the answer is C.
Correct answer: In solid NaCl. there is no migration of ions- A. Magnetic
- B. Repulsive
- C. Electrostatic
- D. Weak
Explanation: An ionic crystal consists of ions bound together by electrostatic attraction.
Correct answer: Electrostatic- A. Ionization energy
- B. Ionic radius ratio
- C. Electron affinity
- D. Bond length
Explanation: NaCl and CsF have the same geometry because they have the same ionic radius ratio.
Correct answer: Ionic radius ratio- A. 4
- B. 6
- C. 8
- D. 3
Explanation: In NaCl (sodium chloride), each Na ion is surrounded by six chloride (Cl) ions, and each Cl ion is surrounded by six sodium (Na) ions.
Correct answer: 6- A. Attract
- B. Compress
- C. Repel
- D. Overlap
Explanation: To an ionic compound when a force is applied, like charges in the lattice come together due to the force applied and repel each other…
Correct answer: Repel- A. Half of 5.63
- B. Double to 5.63
- C. 5.63
- D. None of these
Explanation: Option A is correct since, in a chlorine molecule, chlorine exists as atoms.
Correct answer: Half of 5.63- A. 6
- B. 8
- C. 4
- D. 5
Explanation: Cesium in cesium chloride has the coordination number 8.
Correct answer: 8- A. Face centered cubic
- B. Body centered cubic
- C. Simple Cubic
- D. Hexagonal
Explanation: Option A is correct.The arrangement of Cl- ions in the crystal structure of NaCl is face centered cubic.
Correct answer: Face centered cubic- A. 1
- B. 3
- C. 4
- D. 6
Explanation: - In a simple cubic lattice, each corner is shared by eight adjacent unit cells.- Each corner atom/ion contributes (1/8) to the unit cell…
Correct answer: 1- A. Heating fluorite crystal lattice
- B. Subjecting fluorite structure to high pressure
- C. Interchanging the positions of positive and negative ions in the lattice
- D. Introducing the impurities to the lattice
Explanation: Since the CN of Fluorite and Antifluorite structure are same, hence by interchanging the positions of cation and anions lattice can be…
Correct answer: Interchanging the positions of positive and negative ions in the lattice- A. A2B5
- B. A3B8
- C. A3B5
- D. A5B8
Explanation: Following is the solution of this problem:
Correct answer: A3B8- A. 265 pm
- B. 530 pm
- C. 795 pm
- D. 132.5 pm
Explanation: As we know, Edge length = 2 x distance between Na+ & Cl- Edge length = 2 x 265 = 530 pm Hence, option B is correct.
Correct answer: 530 pm- A. 0.548 Å
- B. 0.010 Å
- C. 0.400 Å
- D. 0.226 Å
Explanation: Following is the solution of this question:
Correct answer: 0.226 Å- A. 154.1 pm
- B. 92.6 pm
- C. 366.3 pm
- D. None of these
Explanation: In body centred cubic lattice, oppositely charged ions touch each other along the cube.
Correct answer: 154.1 pm- A. 2.0 Å
- B. 5.6 Å
- C. 2.8 Å
- D. 3.8 Å
Explanation: Following is the solution of this problem:
Correct answer: 2.0 Å- A. 4
- B. 8
- C. 6
- D. 10
Explanation: In NaCl, each Na+ ion surrounded by six Cl- ions and each Cl- ion is surrounded by six Na+ ions.
Correct answer: 6Shape of Ionic Crystals MCQs: common questions
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