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  1. Problems
  2. /Chemical Bonding
  3. /Lewis Structures and Ionic Bonds

Lewis Structures and Ionic Bonds

Chemistry
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More in Chemical BondingLewis Structures and Ionic BondsShapes of Molecules and HybridisationMolecular Orbitals and Hydrogen Bonds
22 problems
Type:
1.
Bond enthalpies of carbon to carbon bonds are 348 kJ mol⁻¹ for C-C, 614 kJ mol⁻¹ for C=C and 839 kJ… New
High School (11–12) · Molecular Orbitals and Hydrogen Bonds, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
2.
Zn²⁺ has a radius of 74 pm and Mg²⁺ of 72 pm. New
High School (11–12) · Molecular Orbitals and Hydrogen Bonds, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Hard
3.
In their best Lewis structures, the perchlorate ion ClO₄⁻ has three Cl=O bonds, the sulfate ion… New
High School (11–12) · Molecular Orbitals and Hydrogen Bonds, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
4.
Count the valence electrons of diborane, B₂H₆. New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
5.
The thiocyanate ion, SCN⁻, has the atoms in the order S, C, N and 16 valence electrons. New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Hard
6.
Iodine dissolves in a solution of potassium iodide as the triiodide ion, I₃⁻. New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
7.
Draw nitrogen dioxide as O=N-O, with the odd electron on nitrogen, two lone pairs on the… New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
8.
A bent molecule XY₂ has a total dipole moment of 1.20 D. New
High School (11–12) · Shapes of Molecules and Hybridisation, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Hard
9.
Sulfur dioxide has a dipole moment of 1.63 D and a bond angle of 119°. New
High School (11–12) · Shapes of Molecules and Hybridisation, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
10.
Lithium fluoride and sodium bromide can be studied as single molecules in a hot gas. New
High School (11–12) · Shapes of Molecules and Hybridisation, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
11.
Dichlorobenzene has three isomers. The two C-Cl bonds lie in the plane of the ring, at 60° in the… New
High School (11–12) · Shapes of Molecules and Hybridisation, Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
12.
Chlorine monofluoride, ClF, has a dipole moment of 0.88 D and a bond length of 163 pm. New
High School (11–12) · Lewis Structures and Ionic Bonds, Shapes of Molecules and HybridisationStemPy LabStemPy Lab
Medium
13.
The carbonate ion, CO₃²⁻, has three canonical forms. New
High School (11–12) · Lewis Structures and Ionic Bonds, Shapes of Molecules and HybridisationStemPy LabStemPy Lab
Medium
14.
Carbon to carbon bonds have these lengths and bond enthalpies: single, 154 pm and 348 kJ/mol… New
High School (11–12) · Lewis Structures and Ionic Bonds, Shapes of Molecules and HybridisationStemPy LabStemPy Lab
Medium
15.
For lithium fluoride, in kJ/mol: sublimation of lithium +159, half the bond enthalpy of fluorine… New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Easy
16.
Arrange MgO, CaO, NaF and KBr in order of decreasing lattice enthalpy. Give a reason for each step. New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
17.
Forming Mg²⁺ and O²⁻ seems costly. In kJ/mol: sublimation of magnesium +148; half the bond enthalpy… New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Hard
18.
For potassium chloride, in kJ/mol: sublimation of potassium +89, half the bond enthalpy of chlorine… New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
19.
Find the number of valence electrons in the Lewis structures of the chlorate ion, ClO₃⁻, the… New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Easy
20.
For each molecule, count the electrons around the central atom, and say whether it has an… New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium
21.
Nitrous oxide, N₂O, has the atoms in the order N-N-O. New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Hard
22.
Count the valence electrons in the sulfate ion, SO₄²⁻. New
High School (11–12) · Lewis Structures and Ionic BondsStemPy LabStemPy Lab
Medium