Which group 1 element has the highest flame coloration intensity due to its ionization energy?
Flame color intensity increases with lower ionization energy, allowing easier electron excitation. Cs (lowest ionization energy) exhibits the highest intensity among Li, Na, K, and Cs.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electronic Configuration and Types of Elements - s p d f Blocks
