The work function of rubidium smaller than the work function of potassium.
<h3>How can we compare the work function of rubidium and potassium?</h3>
The work function of the films was determined photoelectrically. So we can say that which particle shows a better photoelectric effect that particle has a greater work function.
Films of rubidium were deposited on quartz substrates by evaporation at pressures of less than 10⁻¹⁰ Torr.
At 140 K the work function of rubidium was determined photoelectrically, so the work function of Rubidium was found to be (2.261 ± 0.015) eV.
And now for the potassium we can show that, At 140 K the work function of Potassium was found to be 2.3eV.
So from the above data we can conclude that,
2.26± 0.015 < 2.3
The work function of rubidium smaller than the work function of potassium.
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