Periodic trends (electropositivity): Which of the following is the most electropositive element? Recall: metallic character increases down a group and to the left. Choose the correct option.

ConceptElectropositivity (tendency to lose electrons) increases down the alkali metals; among common stable elements, caesium is typically the most electropositive (Fr is radioactive and rarely considered in GK).

Final AnswerCaesium (Cs)