Ammonia, nh3, has a higher melting point than pf3, despite the fact that melting point increases as you move down a group of elements in the periodic table. ammonia has a higher melting point because of the

Although, it is a fact that the melting point increases as you move down a group of elements in the periodic table, you cannot use this information for compounds since the type of bonds present in the compounds are another factor that would affect their properties. For this case, ammonia would have a higher melting point as compared to PF3 because of the presence of hydrogen bonding. PF3 only has dipole-dipole forces which is much weaker as compared to a hydrogen bond. Hydrogen bonding is a special type of dipole forces which is a result of the electronegativity of a hydrogen atom and a very electronegative atom.

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.

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