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Chapter 20 - Atomic Spectra - 6
1.
In metalstable state the atom can reside for:
a) 10
-3
sec
b) 10
-8
sec
c) 10
-9
sec
d) 10
-6
sec
2.
Metalstable state is:
a) Below the excited
b) Above the excited state
c) One of the excited state
d) Parallel to the excited state
3.
Atomic spectra
a) Planck’s quantum theory
b) Target element
c) X-Rays
d) Spectroscopy
4.
Brackett series
a) Planck’s quantum theory
b) X-Rays
c) Target element
d) Spectroscopy
5.
Bohr first orbit radius
a) ΔPΔx
³
h/2π
b) Vn=2
p
Ke
2
/nh
c) Target element
d) 0.053nm
6.
Excitation potential
a) Target element
b) Line spectra
c) Infrared region
d) Potential of higher state
7.
CAT-scanner
a) Planck’s quantum theory
b) Line spectra
c) Target element
d) Infrared region
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