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.
This type of covalent bond is called polar covalent. Molecules composed of covalently bonded atoms may also be polar or nonpolar. the molecule to be polar, it must, of course, have polar bonds. determining the polarity of a molecule is its shape.