
Concept explainers
Interpretation:
The binding energy of each metal, and the metal with highest binding energy is to be predicted; and the metal thatejects electron when photon is fired on it is to be determined.
Concept introduction:
The energy of a photon can be expressed as follows:
Here, E is the energy of photon,
The relationship between wavelength and frequency is as follows:
Here,
The relationship between binding energy, kinetic energy, and energy of ejected photon is as follows:
Here, E is the energy of ejected photon,

Answer to Problem 103AP
Solution:
(a)
The binding energy of metals A, B, and C is
(b)
An electron can be ejected when a radiation of minimum frequency falls on the metal surface. Therefore, on allowing a radiation of wavelength 333 nmto fall on metal Ametal B, they will eject electrons.
Explanation of Solution
(a)
Given information: The frequency of metal A
The frequency of metal B
The frequency of metal C
Consider the binding energy for metal A, B, and C tobe
In the photoelectric effect, the minimum frequency (or maximum wavelength) that is required to dislodge an electron from the metal surface is called threshold energy. The extra energy is stored in the electron as kinetic energy (K. E.). If kinetic energy becomes zero and the binding energy is equal to the energy of the ejected photon, that is,
Now, the binding energy of electron for each metal can be evaluated as shown below:
For metal A:
For metal B:
For metal C:
Therefore, the binding energy of metal C is highest.
(b)
Given information:
The wavelength of photon is
The frequency of metal A
The frequency of metal B
The frequency of metal C
The frequency associated with
So, the frequency is
Since the electron can be ejected when a radiation of minimum frequency falls on the metal surface;therefore, on allowing a radiation of wavelength
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Chapter 6 Solutions
Chemistry
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- Identify the missing organic reactant in the following reaction: x + x O OH H* + ☑- X H+ O O Х Note: This chemical equation only focuses on the important organic molecules in the reaction. Additional inorganic or small-molecule reactants or products (like H₂O) are not shown. In the drawing area below, draw the skeletal ("line") structure of the missing organic reactant X. Click and drag to start drawing a structure. Carrow_forwardCH3O OH OH O hemiacetal O acetal O neither O 0 O hemiacetal acetal neither OH hemiacetal O acetal O neither CH2 O-CH2-CH3 CH3-C-OH O hemiacetal O acetal CH3-CH2-CH2-0-c-O-CH2-CH2-CH3 O neither HO-CH2 ? 000 Ar Barrow_forwardWhat would be the best choices for the missing reagents 1 and 3 in this synthesis? 1. PPh3 2 2. n-BuLi 3 Draw the missing reagents in the drawing area below. You can draw them in any arrangement you like. • Do not draw the missing reagent 2. If you draw 1 correctly, we'll know what it is. • Note: if one of your reagents needs to contain a halogen, use bromine. Explanation Check Click and drag to start drawing a structure.arrow_forward
- Predict the products of this organic reaction: NaBH3CN + NH2 ? H+ Click and drag to start drawing a structure. ×arrow_forwardPredict the organic products that form in the reaction below: + OH +H H+ ➤ ☑ X - Y Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the products. In the drawing area below, draw the skeletal ("line") structures of the missing organic products X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. Garrow_forwardPredict the organic products that form in the reaction below: OH H+ H+ + ☑ Y Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the products. In the drawing area below, draw the skeletal ("line") structures of the missing organic products X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. ✓ marrow_forward
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