Worksheetsatomic structure
Total questions: 13
Worksheet time: 39mins
Name
Class
Date
1.
Which two particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Molecules and Compounds
d)
Neutrons and Electrons
2.
What is the role of an electron in an atom?
a)
Electrons live inside the nucleus and carry a neutral charge.
b)
Electrons circle the nucleus and have a positive charge.
c)
Electrons circle the nucleus and have a negative charge.
d)
Electrons live inside the nucleus and have a negative charge.
3.
In an atom, what is the number of protons equal to?
a)
The number of electrons.
b)
The number of neutrons.
c)
The number of molecules.
d)
The number of nuclei.
4.
What forms when two atoms combine?
a)
A molecule.
b)
A nucleus.
c)
A proton.
d)
An electron.
5.
A proton is a _____ charged particle.
a)
Negatively
b)
Positively
6.
What is an atomic number?
a)
The sum of protons and neutrons in an atom.
b)
The sum of protons and electrons in an atom.
c)
The number of protons in an atom of a specific element.
d)
The number of neutrons in a specific element.
7.
Which type of orbital is shaped like a sphere?
a)
s orbital
b)
p orbital
c)
d orbital
d)
f orbital
8.
Which principle states that no two electrons will occupy the same space in an atom?
a)
Hund's Rule
b)
Pauli Exclusion Principle
c)
Aufbau Principle
d)
Pauling Postulate
9.
What is the electron configuration for F?
a)
1s2 2s2 3p5
b)
1s2 2s2 3d5
c)
1s2 2s2 2p5
d)
1s2 2p5
10.
Identify the following element:
1s22s22p63s23p64s23d10
1s22s22p63s23p64s23d10
a)
nickel
b)
copper
c)
zinc
d)
gallium
11.
Which of the following quantum number sets is not allowed?
a)
{ 3, 2, +1, -1/2 }
b)
{ 5, 3, -1, +1/2 }
c)
{ 12, 1, +2, +1/2 }
d)
{ 7, 6, -5, -1/2 }
12.
How many valence electrons are in an atom of sulfur?
a)
2
b)
4
c)
6
d)
8
13.
How many unpaired electrons are in an atom of strontium? (atomic number 38)
a)
0
b)
1
c)
2
d)
3
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