JEE Main · ChemistryEasy
Which metal is used in photoelectric cells due to its low ionisation energy?
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: C —
Solution
- Photoelectric cells require metals that easily emit electrons when exposed to light.
- This property is directly related to the ease of ionisation.
- Cesium has the lowest first ionisation energy in the group.
- Hence the answer is (C).
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