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  1. Problems
  2. /Chemical Bonding
  3. /Molecular Orbitals and Hydrogen Bonds

Molecular Orbitals and Hydrogen Bonds

Chemistry
+ Upload a Problem
More in Chemical BondingLewis Structures and Ionic BondsShapes of Molecules and HybridisationMolecular Orbitals and Hydrogen Bonds
13 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.
Hydrogen sulphide, hydrogen selenide and hydrogen telluride boil at 213 K, 232 K and 271 K; their… New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Hard
5.
A mixture of ortho-nitrophenol and para-nitrophenol is steam distilled. New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Medium
6.
Water boils at 373 K and hydrogen sulphide at 213 K, although an H₂S molecule is almost twice as… New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Easy
7.
Fluorine, F₂, has 18 electrons. Write its configuration and find its bond order. New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Hard
8.
The B₂ molecule has 10 electrons. Write its configuration, find its bond order, and find the number… New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Medium
9.
Arrange O₂, O₂⁺, O₂⁻ and O₂²⁻ in order of increasing bond length. Which of them are paramagnetic? New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Medium
10.
Nitrogen, N₂, has 10 bonding and 4 antibonding electrons. New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Medium
11.
Two helium atoms have four electrons between them. New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Easy
12.
The C₂ molecule, found in flames and in comets, has 12 electrons. New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Medium
13.
Two atoms of the second period come together, and each brings its 1s, 2s and three 2p orbitals. New
High School (11–12) · Molecular Orbitals and Hydrogen BondsStemPy LabStemPy Lab
Easy