17. which of the following increases with increasing atomic number in group 2a? (a) atomic radius (b) electron affinity (c) first ionization energy (d) number of outermost electrons

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Draw the lewis dot structure for each of the following polyatomic ions

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?