2. What is the minimum amount of work (4) required to rem an electron from the surface of the mystery metal? emove 3. Based on the information available, what is likely the mystery metal be?

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2. What is the minimum amount of work (4) required to remove
an electron from the surface of the mystery metal?
3. Based on the information available, what is likely the mystery metal
be?
Transcribed Image Text:2. What is the minimum amount of work (4) required to remove an electron from the surface of the mystery metal? 3. Based on the information available, what is likely the mystery metal be?
John, Izabelle, and Johannes perform an experiment in a
laboratory to investigate the behavior of electrons under an electron
microscope. They shine light with a frequency of 6.2 x 1014 Hz on a mystery
metal. They observed that the ejected electrons have a kinetic energy
(Kmax) of 3.28x10-20 J. Some of the possible work function () values
of metal are shown in the table. Remember that the Planck's constant is
equal to 6.63x10-34J. s. You can use scientific calculator for this activity.
Use the following equations to answer the questions below:
Ehf
Kmax = hf -
Table of work function ()
Metal
Work function
Calcium
4.60x10-19
Tin
7.08x10-19
Sodium
3.78x10-19.
Hafnium
6.25x10-19
Samariu
4.33x10-19
m
Source: (Khan Academy 2021)
Transcribed Image Text:John, Izabelle, and Johannes perform an experiment in a laboratory to investigate the behavior of electrons under an electron microscope. They shine light with a frequency of 6.2 x 1014 Hz on a mystery metal. They observed that the ejected electrons have a kinetic energy (Kmax) of 3.28x10-20 J. Some of the possible work function () values of metal are shown in the table. Remember that the Planck's constant is equal to 6.63x10-34J. s. You can use scientific calculator for this activity. Use the following equations to answer the questions below: Ehf Kmax = hf - Table of work function () Metal Work function Calcium 4.60x10-19 Tin 7.08x10-19 Sodium 3.78x10-19. Hafnium 6.25x10-19 Samariu 4.33x10-19 m Source: (Khan Academy 2021)
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