WorksheetsSPS 1 #2 ions isotopes
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
How many neutrons are in an atom of carbon-14?
a)
6
b)
8
c)
10
d)
14
2.
How many protons does this isotope of titanium have?
a)
22
b)
26
c)
48
d)
70
3.
Write the hyphen notation for the isotope that has 39 protons and 50 neutrons.
a)
Yttrium-11
b)
Tin-39
c)
Tin-89
d)
Yttrium-89
4.
Chromium has four naturally occurring isotopes (chromium-50, chromium-52, chromium-53, and chromium-54). What is the average atomic mass of Chromium?
a)
4
b)
51.996
c)
52.25
d)
Not enough information was given.
5.
When an atom loses a valence electron, it becomes a _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
6.
When an atom gains a valence electron, it becomes a _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
7.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
8.
If an element has 3 valence electrons, what charge will likely form on its ion ? Hint: It will lose those electrons. What happens to the charge when it loses 3 electrons?
a)
+3
b)
+5
c)
-3
d)
-5
9.
Group 17 always has ions with a charge of
a)
+1
b)
+2
c)
-1
d)
-2
10.
What is the charge of a sodium ion? (Sodium is in group 1)
a)
+2
b)
+1
c)
-1
d)
-2
100 %
