WorksheetsAtoms Test Review
Total questions: 25
Worksheet time: 29mins
All atoms of a given element have the same ________.
mass
number of protons
number of neutrons
number of electrons and neutrons
density
Of the following, the smallest and lightest subatomic particle is the ________.
electron
neutron
proton
How many electrons does the N3- ion possess?
2
4
7
8
10
If a iron (Fe) atom loses 3 electrons to make an ion, what is the charge on that ion?
3-
2-
3+
2+
An atom of 118Xe contains _____________ neutrons. Xenon has an atomic number of 54.
54
64
110
118
The ground-state electron configuration of _____________ is [Ar]4s13d5.
Cr
Mn
K
Fe
Which of the following is NOT a sublevel/orbital notation?
1s
2s
2p
2d
What is the mass of a proton in amu?
0
1
2
3
All of the following noble gases have an ns2np6 valence electron configuration except ____________.
Rn
Kr
Ne
He
Isotopes are atoms that have the same ________ but differing ________.
atomic masses, charges
mass numbers, atomic numbers
atomic numbers, mass numbers
mass numbers, charges
Which combination of protons, neutrons, and electrons is correct for the isotope of copper, 63Cu?
29 p+, 34 n°, 29 e-
29 p+, 29 n°, 63 e-
63 p+, 29 n°, 63 e-
34 p+, 29 n°, 34 e-
The ground state electron configuration for fluorine is _________.
[He]2s22p3
[He]2s22p6
[He]2s22p2
[He]2s22p5
Which subatomic particle was discovered by J.J. Thomson?
proton
electron
neutron
quark
Which subatomic particle was discovered by Rutherford?
proton
electron
neutron
quark
Which subatomic particle was discovered by Chadwick?
proton
electron
neutron
quark
Which is the correct electron configuration for an oxide ion (oxygen ion) or O2-?
1s2 2s2 2p4
1s2 2s2 2p2
1s2 2s2 2p6
1s2 2s2 3s2
Calcium forms an ion with a charge of _____________.
1+
1-
2+
2-
Fluorine forms an ion with a charge of _____________.
1+
1-
2+
2-
Potassium forms an ion with a charge of _____________.
1+
1-
2+
2-
Of the following, ___________ contains the greatest number of electrons.
P3-
P2+
P
P3+
What is the atomic mass of an oxygen atom with 8 protons and 9 neutrons?
8
9
16
17
Which of the following atoms has the least number of neutrons?
bromine - 79
chlorine - 35
carbon - 14
carbon - 12
The wavelength of light that has a frequency of 1.20 x 1013 Hz is ________________ m.
2.5 x 105
12.0
25.0
2.50 x 10-5
How many valence electrons are in boron?
1
2
3
4
How many valence electrons are in iodine?
5
6
7
8
