Question

A certain element has an atomic number z = 38. Using the Bohr model estimate the...

A certain element has an atomic number z = 38. Using the Bohr model estimate the wavelength of the Ka X-ray

Homework Answers

Answer #1

For an electronic transition from state n2 to n1 wavelength of the photon emitted is given by

Z is the atomic number of the element and R is Rydberg constant.

For transition takes place from n2=2 to n1=1

Also we must take in account the screening effect of the electrons which reduce the effective nuclear charge from Z to Z-1

So we have

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A certain medical machine emits x-rays with a minimum wavelength of 0.022 nm. One day, the...
A certain medical machine emits x-rays with a minimum wavelength of 0.022 nm. One day, the machine has an electrical problem and the voltage applied to the x-ray tube decreases to 80% of its normal value. Now what is the minimum x-ray wavelength produced by the machine? b. What is the maximum x-ray energy this machine (with electrical problems) can produce? c. The atomic number of an element is 82. According to the Bohr model, what is the energy of...
A certain medical machine emits x-rays with a minimum wavelength of 0.027 nm. One day, the...
A certain medical machine emits x-rays with a minimum wavelength of 0.027 nm. One day, the machine has an electrical problem and the voltage applied to the x-ray tube decreases to 78% of its normal value. Now what is the minimum x-ray wavelength produced by the machine? What is the maximum x-ray energy this machine (with electrical problems) can produce? The atomic number of an element is 82. According to the Bohr model, what is the energy of a Kα...
Using the Bohr formula, En = -Z2 (13.6 eV)/n2, calculate the atomic number of Copper.
Using the Bohr formula, En = -Z2 (13.6 eV)/n2, calculate the atomic number of Copper.
Describe Bohr's atomic model and compare it to Thomson's atomic model. Then using Bohr's model answer:...
Describe Bohr's atomic model and compare it to Thomson's atomic model. Then using Bohr's model answer: At what wavelength will emission from n=4 to n=1 for the H atom be observed?
what is the atomic number of an element that has 43 protons and 50 neutrons
what is the atomic number of an element that has 43 protons and 50 neutrons
The tube in a medical reserach X-ray unit uses nickel (Z = 29') as it's target...
The tube in a medical reserach X-ray unit uses nickel (Z = 29') as it's target 1. Use the Bohr model to estimate the minimum kinetic energy electrons must have to in order for Ka X-rays to just appear in the X-ray spectrum of the tube. E(e) = 9914.4 eV -- correct 2. Assuming the electrons are accelerated from test through a voltage, V, what is the minimum voltage necessary to produce the Ka-rays? V = 9914.4 V ---- correct...
Which of the following provisions of the Bohr atomic model of hydrogen turned out to be...
Which of the following provisions of the Bohr atomic model of hydrogen turned out to be false? The line spectrum of hydrogen is produced when photons are emitted having energies which are differences between quantum energy levels. b) The energy of the electron is quantized. An electron moves in a circular orbit around the nucleus. The energy of the electron is inversely proportional to the square of the quantum number n.
lithium has an atomic number Z=3. A Li2+ ion, which has only one electron, is in...
lithium has an atomic number Z=3. A Li2+ ion, which has only one electron, is in a state with prinicpal quantum number n=1. using bohrs model, calculate the radius of its electron orbit, in pm (picometers).
Give the symbol for the element with the lowest atomic number that.... a) has two 4p...
Give the symbol for the element with the lowest atomic number that.... a) has two 4p electrons ______ b) has three unpaired electrons____ c) is a period three alkaline earth metal_____ d) forms an ion with a -1 charge____ e)has seven valance electrons____ f) has a nuclear charge of +27____ g) a nonmetal with Z> 10_____ h) forms an ion with a +3 charge+____
Alpha particles of a certain initial kinetic energy are projected at nuclei with atomic number Z...
Alpha particles of a certain initial kinetic energy are projected at nuclei with atomic number Z = 45. The closest distance of approach of the alpha particles to the nucleus is 100 fm (fm = femtometer = 10-15 m). If alpha particles of the same initial kinetic energy are projected at nuclei with atomic number 82, what is the distance of closest approach? Give your answer in fm. (Enter the number only -- do not include the units in your...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT