Assignment 04
Isotopic Notation & Atomic A & P
Name: ___________________________________
5 Points # Missed: _____ Points Earn: _______
(Items 1-7) Identify the following isotopes by writing the name of the isotope and the complete isotopic
symbol.
1. 1 neutron, 1 proton, 1 electron:
2. 8 neutrons, 6 protons, 6 electrons:
3. 17 neutrons, 15 protons, 15 electrons:
4. 10 neutrons, 8 protons, 10 electrons:
5. 18 neutrons, 17 protons, 18 electrons:
6. 12 neutrons, 11 protons, 10 electrons:
7. 81 neutrons, 56 protons, 54 electrons:
IMPORTANT RELATIONSHIPS
A=Z + N
C=Z–E
INSTRUCTIONS: Using the above relationships and the example seen in Row 1, place an answer into
each numbered box in the table. You may not change any values already entered into the table.
ROW
Isotope
Name
EXP
Isotope
Atomic Neutron
Symbol Number Number
(Z)
(N)
Charge
(C)
36
Chloride-36 ion
Cl-
17
8
1
Mass
Number
Number Electrons
(A)
(E)
17
9
19
10
36
11
-1
18
12
Strontium-88
0
13
2
14
Nitride-14 ion
15
7
16
17
24
3
14
18
-3
19
20
21
24
24
26
Mg
12
22
23
4
30
27
5
28
Lead(IV)-207 ion
6
29
30
82
78
31
32
33
34
35
36
37
38
39
40
41
42
Sulfur-32
7
Gold-197
43
44
45
8
46
20
47
9
35
Aluminum-27 ion
40
48
49
14
+2
50
+3