Which of the following elements has the lowest first ionization enthalpy () in the entire periodic t — Periodic Table and Periodicity Chemistry Question
Question
Which of the following elements has the lowest first ionization enthalpy ($IE_1$) in the entire periodic table (excluding radioactive elements)?
Answer: C
💡 Solution & Explanation
Ionization energy decreases down a group and increases across a period. Cesium, located at the bottom left of the stable elements, has the largest size and lowest $IE_1$.
💬Ask on WhatsApp →
Still have doubts about this question?
Send it to our AI chemistry tutor on WhatsApp — gets answered in minutes