Question: The work function of an element is the energy required to remove an electron from the surface of the solid. The work function for lithium

The work function of an element is the energy required to remove an electron from the surface of the solid. The work function for lithium is 279.7 kJ/ mol (that is, it takes 279.7 kJ of energy to remove 1 mole of electrons from 1 mole of Li atoms on the surface of Li metal). What is the maximum wavelength of light that can re-move an electron from an atom in lithium metal?

Step by Step Solution

★★★★★

3.39 Rating (168 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The energy needed to remove ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

442-E-C-E-A-C (7).docx

120 KBs Word File

Students Have Also Explored These Related Chemical Engineering Questions!

The minimum energy required to remove an electron from a metal is 2.60 eV. What is the longest wavelength photon that can eject an electron from this metal?

The energy required to remove an electron from an atom is called the ionization energy. Predict the energy needed to ionize the last electron from an atom with atomic number Z. (The atomic number is...

The charge entering the positive terminal of an element is q = 10 sin 4 (t mC While the voltage across the element (plus to minus) is v = 2cos 4 (t V (a) Find the power delivered to the element at t...

Photoelectric Effect Directions: Log into Gizmos via LCPSgo to go through the simulation. Respond to the questions and prompts in the orange boxes. Activity A: Wavelength and flux Get the Gizmo ready...

(b) Calculate the threshold frequency for sodium. threshold frequency Hz (3) (Total 5 marks) 6. (a) Explain what is meant by the term work function of a metal. (2) (b) In an experiment on the...

The experimental result differs from the assumption. The result shows that the ring oscillator frequencies can be grouped into two groups, where the first group is the high frequency group for the...

Euler's original article about the Konigsberg Bridge Problem, which is dated 1736, presents a second similar problem with two islands, four rivers flowing around them, and 15 bridges connecting...

(20') The transmission probability for electron to tunnel through the energy barrier (gap) from the tip to metal sample surface is: EVm d V E V E ET 0 00 2 2 exp116)( Where E is the kinetic energy of...

Using "Quantum Theory of Light, Photoelectric Effect" by Einstein Planck -What is the main idea of the Author's argument? What is the main essence of the piece? -What ways does the author use to...

Part VII A) The photoelectric effect explains the event of which electrically charged particles release from a material, as that material absorbs electromagnetic radiation. On the other hand, the...

4. The error function is defined 2 erf (2) = 1 dt. Suppose you need to compute erf (3) with an error less than 10-6 using the trapezoidal rule. How many points would you need to use to guarantee...

Give the reaction sequence to form lidocaine starting with 2,6-xylidine, and name the mechanisms involved.

9.76 Is the mean of the sampling distribution of x1 2 x2 always 0? If so, explain why. If not, explain what condition(s) would be necessary for it to be 0.

Cats, mental health problems, and scatterplots: Consider the scenario in the previous exercise again. The two variables under consideration were (1) number of cats owned and (2) level of mental...

The contributions of J. J. Thomson and Ernest Rutherford led the way to todays understanding of the structure of the atom. What were their contributions?

The two most reactive families of elements are the halogens and the alkali metals. How do they differ in their reactivities?

When hydrogen is burned in oxygen to form water, the composition of water formed does not depend on the amount of oxygen reacted. Interpret this in terms of the law of definite proportion.

Question 8 1 pts All else being equal, which will cause the equilibrium interest rate to increase? The central bank expands the money supply The total wealth of market participants increases...

Look back to the top-right panel of Figure 9.2 . What proportion of HULs returns was explained by market movements? What proportion was unique or diversifiable risk ? How does the unique risk show up...

The following data come from the 2018 ANES, pid14 and warmyou , both recoded into 3 categories. One question asked about party identification. The other asked about the importance of climate change....