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WorksheetsAtomic Structure
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
What is the total number of atomic orbitals in an atom with the principal quantum number n =3
a)
3
b)
13
c)
9
d)
18
2.
The electronic configuration of the 7N3- ion is
a)
1s2 2s2 2p3
b)
1s2 2s2 2p6
c)
1s2 2s2 2p3 2p6 3s2 3p2
d)
1s2 2s2 2p3 2p6 3s2 3p6
3.
The Lyman series in the hydrogen spectrum is found in
a)
the ultraviolet region
b)
the visible region
c)
the infrared region
d)
the X-ray region
4.
What would be the wavelength of the third line in Balmer series?
a)
316 nm
b)
434 nm
c)
534 nm
d)
757 nm
5.
The line with the shortest wavelength is produced in the hydrogen spectrum when electron moves
a)
from n=2 to n=1
b)
from n=3 to n=1
c)
from n=4 to n=1
d)
from n=4 to n=3
6.
What is the orbital designation corresponding to the quantum numbers : n=4, l = 2, m=0
a)
2s
b)
2p
c)
4p
d)
4d
7.
After filling up the 3p orbital , what kind of orbital must electron occupy?
a)
a spherically-shaped orbital
b)
a dumb-bell shaped orbital
c)
either 4s or 3d orbital
d)
an orbital of lower energy than 3p
8.
A spectrum containing a series of specific wavelength is a ______spectrum.
a)
line
b)
visible
c)
continuous
d)
balmer
9.
Iron has a proton number of 26. What is the electronic configuration of Fe2+?
a)
[Ar] 4s2 3d6
b)
[Ar] 3d6
c)
[Ar] 4s2 3d4
d)
[Ar] 4s2 3d5
10.
Determine the frequency of a radiation which has an energy 3.37 x 10-19 J per photon.
a)
6.62 x 1014 s-1
b)
1.70 x 1015 s-1
c)
5.08 x 1014 s-1
d)
2.21 x 1014 s-1
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