Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions?
1) Na
2) HCl
3) BH3
4) CH3NHC4H9
2 and 4
Well, let's see which compound is the funniest when it comes to intermolecular interactions!
1) Na: Sorry, Na, but you're out of the running. You're an ionic compound, so you don't have any dispersion or dipole-dipole interactions. Plus, you're pretty salty about it.
2) HCl: Ah, HCl, now we're talking! You're a gas that loves playing with dispersion and dipole-dipole interactions. You just can't help but bond with other molecules, forming those delicious hydrogen bonds.
3) BH3: Oh BH3, you're just a bit shy, aren't you? You only have dispersion forces to rely on. Still, we appreciate your effort in making connections.
4) CH3NHC4H9: Whoa, now this compound has quite the name! But, my friend, you have to branch out if you want to have more fun with intermolecular interactions. You do have dipole-dipole interactions, but no dispersion forces to spice things up.
So, the compound that exhibits both dispersion and dipole-dipole interactions is good old HCl, number 2 on the list! Congratulations, HCl, you're the life of the party!
To determine which compound exhibits only dispersion and dipole-dipole intermolecular interactions, we need to consider their molecular structures and the types of intermolecular forces they can experience.
1) Na (sodium) is a metal, which means it forms a metallic bond. Metallic bonding occurs between metal atoms, where the valence electrons are delocalized throughout the crystal lattice. As a result, Na does not exhibit dispersion or dipole-dipole interactions.
2) HCl (hydrogen chloride) is a polar molecule with a partial positive charge on the hydrogen atom and a partial negative charge on the chlorine atom. This polarity allows HCl to experience both dispersion forces and dipole-dipole interactions.
3) BH3 (boron trihydride) is a nonpolar molecule. Although boron is capable of forming three bonds with hydrogen atoms, its trigonal planar structure leads to the symmetric distribution of charges, resulting in a nonpolar molecule. As a nonpolar compound, BH3 only experiences dispersion forces.
4) CH3NHC4H9 (N,N-diethylmethanamine) is a polar molecule. The presence of the nitrogen atom and the attached alkyl groups (ethyl groups) contribute to the polarity of the molecule. Therefore, CH3NHC4H9 can experience both dispersion forces and dipole-dipole interactions.
Based on the above analysis, BH3 is the compound that exhibits only dispersion and dipole-dipole intermolecular interactions.
To determine which compound exhibits only dispersion and dipole-dipole intermolecular interactions, we need to analyze the nature of the interactions within each compound.
1) Na (sodium) is a metal that exists as cations in its solid state. It does not have any intermolecular interactions since it forms a metallic lattice structure. Therefore, it does not exhibit dispersion or dipole-dipole interactions.
2) HCl (hydrogen chloride) is a polar molecule. It consists of a hydrogen atom bonded to a chlorine atom. The electronegativity difference between hydrogen and chlorine creates a dipole moment. HCl molecules can experience dipole-dipole interactions. In addition, HCl is a small molecule, and it can also experience dispersion forces.
3) BH3 (boron trihydride) is a nonpolar molecule. It contains three hydrogen atoms bonded to a central boron atom. BH3 is symmetric, and there is no electronegativity difference between boron and hydrogen. Therefore, it does not have a dipole moment and cannot exhibit dipole-dipole interactions. However, BH3 is a small molecule, and it can experience dispersion forces.
4) CH3NHC4H9 (N-methyl-N-butylamine) is a polar molecule. It contains both nitrogen and carbon atoms, which have different electronegativities, creating a dipole moment. Therefore, CH3NHC4H9 can exhibit both dipole-dipole interactions and dispersion forces.
Based on these explanations, only compound 2) HCl (hydrogen chloride) exhibits dispersion and dipole-dipole intermolecular interactions.