1. In which pair do both compounds have ionic bonding?
A. SCl6 and HF
B. Na2SO3 and NH3
C. LiBr and MgO
D. LiF and H2O
To determine which pair of compounds have ionic bonding, we need to understand the nature of ionic bonding. Ionic bonding occurs between a metal and a non-metal, where electrons are transferred from the metal to the non-metal, resulting in the formation of charged ions.
Let's analyze each option:
A. SCl6 and HF: Sulfur hexachloride (SCl6) is a covalent compound since both sulfur and chlorine are non-metals. Hydrogen fluoride (HF) is also a covalent compound for the same reason. Therefore, this pair does not have ionic bonding.
B. Na2SO3 and NH3: Sodium sulfite (Na2SO3) is an ionic compound since sodium is a metal, while sulfur and oxygen are non-metals. Ammonia (NH3) is a covalent compound because nitrogen and hydrogen are both non-metals. Thus, this pair does not have ionic bonding.
C. LiBr and MgO: Lithium bromide (LiBr) is an ionic compound as lithium is a metal and bromine is a non-metal. Magnesium oxide (MgO) is also an ionic compound because magnesium is a metal, and oxygen is a non-metal. Therefore, this pair has ionic bonding.
D. LiF and H2O: Lithium fluoride (LiF) is an ionic compound since lithium is a metal and fluorine is a non-metal. Water (H2O) is a covalent compound because both hydrogen and oxygen are non-metals. Hence, this pair does not have ionic bonding.
Based on our analysis, the pair in which both compounds have ionic bonding is C. LiBr and MgO.