PLS HELP ILL GIBE BRAINLIEST TO WHO GETS IT RIGHT 2) How many grams of KMnO, are needed to make 500.0 mL of a 0.200 M solution?

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.