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WorksheetsValence Electrons Do Now
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Valence electrons are electrons in the shell
a)
furthest from the nucleus
b)
closest to the nucleus
c)
having the lowest energy level
d)
that has the fastest electrons
2.
Choose the correct number of valence electrons for Barium
a)
1
b)
2
c)
3
d)
4
3.
How many valence electrons in Oxygen?
a)
5
b)
6
c)
7
d)
8
4.
All atoms are most stable with (or would "prefer") how many electrons in their valence shell?
a)
1
b)
2
c)
8
d)
18
5.
What is the charge of a Francium cation?
a)
0
b)
+1
c)
+2
d)
-1
6.
Ions are
a)
atoms that have gained or lost a proton
b)
atoms that have gained or lost a neutron
c)
atoms that have gained or lost an electron
d)
any atom
7.
Cations have a __________ charge, anions have a _____________ charge.
a)
positive, negative
b)
negative, positive
c)
negative, neutral
d)
neutral, positive
8.
How many valence electrons does Lithium have?
a)
1
b)
2
c)
3
d)
4
9.
How many valence electrons does Neon have?
a)
18
b)
8
c)
10
d)
2
10.
How many valence electrons does Helium have?
a)
1
b)
2
c)
3
d)
8
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