Select all cases in which the units comprising the solid are best classified as individual atoms.
C5H12
C3H6(propene)
KBrO3
C3H8
AgNO3
C4H8(cyclobutane)
None
To determine which cases represent solids comprising individual atoms, we need to consider the chemical formula and molecular structure of each compound.
1. C5H12: This is a hydrocarbon called pentane, composed of carbon (C) and hydrogen (H) atoms. However, it exists as a volatile liquid at room temperature and not as a solid. Therefore, it is not best classified as individual atoms.
2. C3H6 (propene): This is also a hydrocarbon, specifically an alkene. It is composed of carbon and hydrogen atoms arranged as a double bond between two carbon atoms. Like pentane, propene is a volatile liquid at room temperature, not a solid. Hence, it is not classified as individual atoms.
3. KBrO3: This compound consists of potassium (K), bromine (Br), and oxygen (O) atoms. It forms an ionic solid, where potassium cations (K+) are attracted to bromate anions (BrO3-). Since the solid is not composed of individual atoms but instead a lattice of ions, this case does not classify as having individual atoms.
4. C3H8: This is a hydrocarbon called propane, composed of carbon and hydrogen atoms. Similar to pentane and propene, it exists as a volatile liquid at room temperature and not as a solid. Hence, it does not fit the classification of individual atoms.
5. AgNO3: This compound contains silver (Ag), nitrogen (N), and oxygen (O) atoms. It forms an ionic solid, with silver cations (Ag+) being attracted to nitrate anions (NO3-). As with KBrO3, this compound does not classify as having individual atoms due to its ionic nature.
6. C4H8 (cyclobutane): This is a hydrocarbon, specifically a cycloalkane. It consists of carbon and hydrogen atoms forming a ring structure. Cyclobutane also exists as a volatile liquid at room temperature. Therefore, it is not best classified as individual atoms.
Considering each case, none of them can be classified as solids comprising individual atoms.