CHY 102 Study Guide - Final Guide: Intermolecular Force, Boiling Point, Hydrogen Bond
21 Dec 2015
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Electronegativity of atoms decreases as you go from right to left across a period and. Mini investigation: relating boiling points to intermolecular forces, page 113: answers may vary. Sample answer: the larger the molecule, the more electrons and protons there are attracting each other, the stronger the london dispersion forces, and thus the higher the boiling point. The size of an atom increases as you go from right to left across a period and as you go down a group. The hydrogen compounds in a group are identical except for a non- hydrogen atom. The more polar a substance is, the stronger the dipole dipole force of attraction between its molecules. A more polar molecule will have a higher melting point. This supports my hypothesis that the boiling points of hydrogen compounds will increase from group 14 to 17 and will increase as you go down a group. electronegative atom such as nitrogen, oxygen, or fluorine.
