Need a quick ! when is a roman numeral mostly likely needed in the name of an ionic compound? a) when more than one polyatomic ion b) when the anion is a polyatomic c) when more that one cation is used in the d) when the cation is a transition

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

100 points answer quick 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.