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Question: Answered & Verified by Expert
The metal which has the highest work function in the following is
PhysicsDual Nature of MatterAP EAMCETAP EAMCET 2022 (04 Jul Shift 1)
Options:
  • A Cesium Cs
  • B Sodium Na
  • C Aluminium Al
  • D Platinum Pt
Solution:
1972 Upvotes Verified Answer
The correct answer is: Platinum Pt

Work function is the minimum energy required by an electron to escape from the metal surface. It depends on the properties of the metal and the nature of the surface.

The work function is higest for Platinum with value of 5.65 eV and it is lowest for Cesium with value 2.14 eV.

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