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WorksheetsAtomic structure
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
a)
1
b)
2
c)
3
d)
4
2.
Which of the following best describes the Bohr model atom?
a)
It shows that electrons are evenly scattered in the atom
b)
Electrons are in the nucleus of an atom
c)
Electrons are in orbits around the nucleus
d)
It showed that electrons can be found anywhere in the atom
3.
Which of the following is not possible?
a)
n=3, l=2, m=0
b)
n=1, l=0, m=0
c)
n=3, l=3, m=2
d)
n=4, l=3, m=-3
4.
Which of the above is violation of Pauli’s exclusion principle ?
a)
A
b)
B
c)
C
d)
D
5.
The correct set of four quantum numbers for the balance electron of rubidium atom
(z=37) is
a)
5, 1, 1, +1/2
b)
6, 0, 0, +1/2
c)
5, 0, 0, +1/2
d)
5, 1, 0, -1/2
6.
The spectral line in hydrogen spectrum obtained when the electron jumps from n=5 to n=2 energy level belongs to:
a)
Lyman series
b)
Balmer series
c)
Paschen series
d)
Pfund series
7.
Uncertainity in the position of an electron (mass= 9.1 x 10-31 kg) moving with a velocity 300 m/s, accurate upto 0.001% will be
a)
5.76 x 10-2 m
b)
1.92 x 10-2 m
c)
3.84 x 10-2 m
d)
19.2 x 10-2 m
8.
a)
1
b)
2
c)
3
d)
4
9.
a)
1
b)
2
c)
3
d)
4
10.
a)
1
b)
2
c)
3
d)
4
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