Â© Ted French. Definition: A function is a preset formula in Excel and Google Spreadsheets. Like formulas, functions begin with the equal sign (=) followed by the function's name and its arguments. The function name tells Excel what calculation to perform. The arguments are contained inside round brackets.
Best Answer: Look for molecular symmetries. Symmetrical molecules such as methane, carbon dioxide, carbon disulfide, and borane (BH3) are nonpolar. Asymmetric molecules such as water, ammonia, and acetone are polar.
Nonpolar molecules only have London dispersion forces, which tend to be the weakest of the. three kinds of intermolecular forces. Polar molecules add another kind of force, beyond their. London forces, and so have stronger overall intermolecular forces of attraction.