Which of the following statements is not true about alpha particles? a. essentially the same as a helium nucleus b. from an external source of exposure, it is less harmful than beta particle c. it is smaller than beta particle d. its velocity is less than that of a gamma ray

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.