which of the following statements about molecular polarity is or are true? i. the bond dipole is a vector quantity that has both a magnitude and a direction. ii. if a molecule has a nonzero bond dipole, then it will be a polar molecule. iii. the bond dipoles in a tetrahedral ab4 molecule cancel one another, so the molecule is nonpolar.

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.