Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Mass of Electron -9. eV=2.18
GEhergy-dispersive X-ray spectroscapy (EDS) 9S a
during scanning electron microscopy (SEM) for elemental analysis. Ahigh
energy electron beam is directed al an atorn or molecle. Sleetrons are electa
from the inner shell of the atom (n=1), which forms a hole. An electron From
the outlet shell will Fill the hole and in
the formof an X-ray. We decide to perform EBS onra piece of copper.
En =-Ry()
Plan CK's constant- Go626×16-34 J.s,
Mass of Electron
I Rydberg CRy)=13-6 eV=2.18
Speed of Light=2-998 x108 m-s";
Tonization energy of copper:7.726eV;
lev= 1.602x16-19U,
popular onalytical technique used
doirg sojwill orinta photon in
3.109入10281e
q,169 x
%3D
a) Calculate the energy of an X-ray emitted when an
n-4 shell fills He hole in the h1 stell (in ev).
electron from the
.
Hint: The
ansuer can hever be anegative value
of the X-ray lin m)?
b) What is the wavelengh
C) Would you expect silver to have a higher
2ationenergy than copper? Explain.
er or loweY ioni-
per GEAR
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