JEE Main202325 Jan 2023Morning ShiftChemistrys Block ElementsActual
Match List I with List II List I List II Elements Colour imparted to the flame A K I Brick Red B Ca II Violet C Sr III Apple Green D Ba IV Crimson Red Choose the correct answer from the options given below:
Options
- AA-II, B-I, C-III, D-IV
- BA-II, B-IV, C-I, D-III
- CA-II, B-I, C-IV, D-III
- DA-IV, B-III, C-II, D-I
Correct answer
C. A-II, B-I, C-IV, D-III
Step-by-step solution
The colours of the flame are produced because of the movement of the electrons in the metal ions present in their salts. Calcium exhibits a brick-red colour. Strontium exhibits crimson colour. And the barium exhibits an apple green colour. K is an alkali metal. Potassium is colourless or white but when it is heated, it produces a violet flame due to the excitation of the electrons to the higher energy orbitals. Potassium burns with a light purple-coloured flame. So, the correct option is C