Which of the following statements are correct regarding the photoelectric effect in s-block elements — s Block Elements Chemistry Question

💡 Solution & Explanation

Cesium and Potassium have very low ionization energies, meaning their electrons are easily ejected by visible light, making them ideal for photoelectric cells. Lithium has a relatively high IE among alkali metals and does not show this effect readily. Alkaline earth metals also have smaller sizes and higher IEs, preventing them from showing the photoelectric effect.