Problem 1
Compare and contrast the chemical and phy sical properties of \(K C l\) and \(C C l_{4},\) and compare and contrast how the chemical bonding model can be used to account for these properties.
Problem 2
Why is the dipole moment of \(N a C l\) extremely large?
Problem 3
Explain why \(C O\) has a dipole moment but \(C O_{2}\) does not.
Problem 4
Explain why an atom with a high ionization energy is expected to have a high electroneg ativity. Explain why an atom with a high electron affinity is expected to have a high electroneg ativity.
Problem 5
Would you predict that a \(\mathrm{Kr}\) atom has high electroneg ativity or low electronegativity? Predict the relative electronegativity of \(\mathrm{Kr}\) and \(\mathrm{F}\).
Problem 6
Explain why \(\mathrm{S}\) has a greater electronegativity than \(\mathrm{P}\) but a smaller electroneg ativity than \(\mathrm{O}\).
Problem 7
N atoms have a high electroneg ativity. However, \(\mathrm{N}\) atoms have no electron affinity, meaning that N atoms do not attract electrons. Explain how and why these facts are not inconsistent.
Problem 8
Explain why compounds formed from elements with large differences in electronegativities are ionic.
Problem 9
Explain why ionic compounds have much higher melting points than covalent compounds.
