Atoms and Ions Worksheet - Copley-Fairlawn City Schools
NAME ____________________________________________________ DATE __________
Ions Worksheet
Use your periodic table to fill in the missing spaces below.
|Element |Atomic Number |Protons |Electrons |Group # |Valence Electrons |Cation or Anion? |
|Carbon | | | | | | |
|Oxygen | | | | | | |
|Potassium | | | | | | |
|Arsenic | | | | | | |
|Iodine | | | | | | |
|Calcium | | | | | | |
|Boron | | | | | | |
|Neon | | | | | | |
For each of the following ions, indicate the total number of protons and electrons. When given the protons and electrons, indicate the ion with the correct charge.
|Ion |Protons |Electrons |Protons |Electrons |Ion |
|Cl1- | | |56 |54 | |
|K1+ | | |87 |86 | |
|S2- | | |84 |86 | |
|Sr2+ | | |50 |46 | |
|Al3+ | | |32 |36 | |
|P3- | | |55 |54 | |
|Si4- | | |12 |10 | |
Use your periodic table to complete the table below. The first one has been done for you.
|Element |Atomic # |Mass |Protons |Neutrons |Electrons |Symbol |
|Iodine |53 |127 |53 |74 |54 |I1- |
| | |35 |17 | | |Cl1- |
|Hydrogen | |1 |1 | |0 | |
| |35 | | |45 |36 | |
| |5 |11 | | | |B3+ |
|Oxygen | |16 |8 | |10 | |
|Element |Atomic # |Mass |Protons |Neutrons |Electrons |Symbol |
|Nitrogen | | |7 |7 |10 | |
|Aluminum | |27 | | |10 | |
| | |56 |26 | |24 | |
| |29 | | |35 | |Cu1+ |
| | |64 |29 | |27 | |
Match each of the positive ions listed with the total number of electrons that ion contains. Use your periodic table. The same answer may be used more than once.
A) 2 B) 10 C) 21 D) 23 E) 24
F) 25 G) 36 H) 48 I) 76 J) 81
____ Al+3 ____ Fe+3 ____ Mg+2 ____ Sn+2
____ Li+1 ____ Cr+3 ____ Rb+1 ____ Pt+2
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