Question
Asked Jan 6, 2020
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Pieces of potassium (Φ  = 3.68 × 10–19 J) and sodium (Φ  = 4.41 × 10–19 J) metal are exposed to radiation of wavelength 315 nm.

What is the velocity of the electrons from potassium?

 

What is the velocity of the electrons from sodium?

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Expert Answer

Step 1

Einstein’s photoelectric equation is given below.

Chemistry homework question answer, step 1, image 1
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Step 2

Energy can be calculated as follows,

Chemistry homework question answer, step 2, image 1
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Step 3

The velocity of the electrons from...

Chemistry homework question answer, step 3, image 1
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