Question

"Potassium salts impart blue colour to the flame."
Answer whether the above statement is true or false.
If true enter 1, else enter 0.

Answer 1

Alkali metals have low ionisation energy. When they are exposed to flame, electrons excite to higher energy level (excited state). When they return to the ground state they release energy in the visible region of electromagnetic spectrum.

Potassium is a alkali metal and imparts violet colour to the flame.