What I Know Do not write anything on this module. Write your answer on a separate sheet of paper.
A. Write the atomic number, mass number, and number of neutrons.
1. Sodium
2. lithium
3. lead
4. krypton
5. barium
6. calcium
7. Sulfur
8. oxygen
9. silicon
10. aluminum
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Answer:
1. Sodium
Atomic Number (AN) - 11
Mass Number (MN) - 22.989769 u
Number of neutrons(NON) - 12 neutrons
2. Lithium
Atomic Number (AN) - 3
Mass Number (MN) - 6.941 u
Number of neutrons(NON) - 4 neutrons
3. Lead
Atomic Number (AN) - 82
Mass Number (MN) - 207.2 u
Number of neutrons(NON) - 126 neutrons
4. Krypton
Atomic Number (AN) - 36
Mass Number (MN) - 83.798 u
Number of neutrons(NON) - 48 neutrons
5. Barium
Atomic Number (AN) - 56
Mass Number (MN) - 137.327 u
Number of neutrons(NON) - 81 neutrons
6. Calcium
Atomic Number (AN) - 20
Mass Number (MN) - 40.078 u
Number of neutrons(NON) - 20 neutrons
7. Sulfur
Atomic Number (AN) - 16
Mass Number (MN) - 32.065 u
Number of neutrons(NON) - 16 neutrons
8. Oxygen
Atomic Number (AN) - 8
Mass Number (MN) - 15.999 u
Number of neutrons(NON) - 8 neutrons
9. Silicon
Atomic Number (AN) - 14
Mass Number (MN) - 28.0855 u
Number of neutrons(NON) - 14 neutrons
10. Aluminum
Atomic Number (AN) - 13
Mass Number (MN) - 26.981539 u
Number of neutrons(NON) - 14 neutrons