Quiz 1 - Ionic Bonding and Compounds | Ionic Bonding and Properties of Ionic Compounds
General Chemistry 1 - Quiz 1 - Ionic Bonding and Compounds
Which group typically forms ions with a +2 charge?
Octet rule: Atoms tend to reach an octet in the valence shell and attain a noble-gas configuration
Alkali earth metals (second column in the periodic table) need to lose 2 electrons to attain the nearest noble-gas configuration
Which of the following compounds would you expect to be ionic?
Ionic bonds form between a metal and a nonmetal while covalent bonds form between two nonmetals.
What is the formula of the compound formed between magnesium and nitrogen ions?
In order to follow the octet rule: Mg must lose 2 electrons ⇒ Mg2+ and N must gain 3 electrons ⇒ N3-
Which one of the following compounds is chromium (III) oxide?
Chromium (III) = Cr3+, Oxide = O2-
What is the energy of the formation of O2- (g) starting from O (g)?
O (g) + 1 e- O- (g)
O- (g) + 1 e- O2- (g)
electron affinity = change in energy when an electron is added to the atom to form an anion
Which set contains only covalently bonded molecules?
BCl3, SiCl4, and PCl3 are all covalent compounds, while the others contain ionic bonds (NH4Br and NaI) or metallic element (Al).
How is generally the formation of ionic compounds?
Ionic bond energy = ionization energy (endothermic) + electron affinity (exothermic) + Coulomb energy (exothermic)
Which substance has both covalent and ionic bonds?
NH4Br consists of the ammonium ion (NH4+), which has 4 covalent bonds (N-H) within the ion, and bromide ion (Br-), forming an ionic compound.
Which of the following is NOT a type of bonding found in compounds?
Van der Waals forces are weak intermolecular forces, not a type of chemical bonding like ionic, covalent, or metallic bonding.
What is the correct name for the ionic compound Al2O3?
The compound Al2O3 is named aluminum(III) oxide, indicating that aluminum has a +3 oxidation state.