CP Chemistry Worksheet: Ions
1) What is an ion?______Electrons different than protons_____________________
Complete the following:
1. For each of the positive ions listed in column 1, use the periodic table to find in column 2 the total number of electrons that ion contains. The same answer may be used more than once.
__B__ 1. Al+3 A. 2
___D_ 2. Fe+3 B. 10
_B___ 3. Mg+2 C. 21
__H__ 4. Sn+2 D. 23
_F___ 5. Co+2 E. 24
__E__ 6. Co+3 F. 25
__A__ 7. Li+1 G. 36
__C__ 8. Cr+3 H. 48
__G__ 9. Rb+1 I. 76
__I__ 10. Pt+2 J. 81
2. For each of the following ions, indicate the total number of protons and electrons in the ion.
|Ion |Number of Protons |Number of Electrons |
|Co+2 |27 |25 |
|Co+3 |27 |24 |
|Cl-1 |17 |18 |
|K+1 |19 |18 |
|S-2 |16 |18 |
|Sr+2 |38 |36 |
|Al+3 |13 |10 |
|P-3 |15 |18 |
3. How many protons, neutrons, and electrons are present in the 59Ni+2 ion?
P: 28 N: 31 E: 26 28
4. How many protons, neutrons, and electrons are present in the 91Zr+4 ion?
P: 40 N: 51 E: 36 40
5. How many protons, neutrons, and electrons are present in the Carbon-20 isotope?
P: 6 N: 14 E: 6
6. How many protons, neutrons, and electrons are present in the Lithium-7 isotope?
P: 3 N: 4 E: 3
7. How many protons, neutrons, and electrons are present in the 13C-4 ion?
P: 6 N: 7 E: 10 6
8. Write the complete chemical symbol for the ion with 84 protons, 125 neutrons, and 80 electrons.
Po: 84 on bottom left 209 top left +4 top right
9. Write the complete chemical symbol for the ion with 27 protons, 32 neutrons, and 25 electrons.
Co: 27 bottom left 59 top left +2 top right
10. Write the complete chemical symbol for the ion with 73 protons, 108 neutrons, and 68 electrons.
Ta: 73 bottom left 181 top left +5 top right
11. Write the complete chemical symbol for the ion with 31 protons, 39 neutrons, and 28 electrons.
Ga: 31 bottom left 70 top left +3 top right
|Name of Element |Element Symbol | |Atomic | | | |
| | |Mass Number |Number |Protons |Neutrons |Electrons |
|Boron |B |11 |5 |5 |6 |5 |
|Sodium |Na |24 |11 |11 |13 |11 |
|Gallium |Ga |68 |31 |31 |37 |31 |
|Yttrium |Y |89 |39 |39 |128 |39 |
|Copper |Cu |64 |29 |29 |35 |29 |
|Technetium |Tc |98 |43 |43 |55 |43 |
|Lead |Pb |207 |82 |82 |125 |82 |
|Ytterbium |Y |173 |70 |70 |103 |70 |
|Actinium |Ac |227 |89 |89 |188 |89 |
|Molybdenum |Mo |96 |42 |42 |54 |42 |
|Thallium |Ti |204 |81 |81 |123 |81 |
|Fermium |Fm |257 |100 |100 |157 |100 |
|Nobelium |No |259 |102 |102 |157 |102 |
|Hydrogen |H |1 |1 |1 |0 |1 |
|Carbon |C |12 |6 |6 |6 |6 |
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