Question

Elements of $IA$ group give colour in bunsen burner flame because of:

• A. low ionization potential
• B. low melting point
• C. softness
• D. all of these

Answer 1

Answer: (A)

low ionization potential

Flame test is given by the alkali metals by a specific color since they have minimum ionization potential so when they are heated electrons jump from lower to higher level and then fall back releasing light energy in the form of color of flame.