ATOMIC STRUCTURE WORKSHEET



ATOMIC STRUCTURE WORKSHEET

Adapted from: cvhs/kirscha/atomic%20structure%20with%20nuc%20worksheet.doc

Complete the table. There is enough information given for each element to determine all missing numbers.

|Nuclear Notation |Hyphen Notation |Atomic Number |Mass Number |Number of Protons |Number of Electrons |Number of Neutrons |

| | | | | | | |

|2311Na |Na-23 |11 |23 |11 |11 |12 |

| | | | | | | |

|4019K |K-40 |19 |40 |19 |19 |21 |

| | | | | | | |

|9038Sr |Sr-90 |38 |90 |38 |38 |52 |

| | | | | | | |

|188O |O-18 |8 |18 |8 |8 |10 |

| | | | | | | |

|4118Ar |Ar-41 |18 |41 |18 |18 |23 |

| | | | | | | |

|12250Sn |Sn-122 |50 |122 |50 |50 |72 |

| | | | | | | |

|13153I |I-131 |53 |131 |53 |53 |78 |

| | | | | | | |

|2612Mg |Mg-26 |12 |26 |12 |12 |14 |

| | | | | | | |

|10947Ag |Ag-109 |47 |109 |47 |47 |62 |

| | | | | | | |

|21H |H-2 |1 |2 |1 |1 |1 |

| | | | | | | |

|3616S |S-36 |16 |36 |16 |16 |20 |

| | | | | | | |

|5523V |V-55 |23 |55 |23 |23 |32 |

| | | | | | | |

|2713Al |Al-27 |13 |27 |13 |13 |14 |

| | | | | | | |

|42He |He-4 |2 |4 |2 |2 |2 |

| | | | | | | |

|5324Cr |Cr-53 |24 |53 |24 |24 |29 |

Use the atomic & mass numbers to determine the number of protons, neutrons, & electrons in each atom. Then fill in the numbers in the diagrams.

1.

2. Sulfur – Atomic number 16

Mass number 32

[pic]

3. Beryllium - Atomic number 4

Mass number 9

[pic]

4. Nitrogen - Atomic number 7

Mass number 14

[pic]

5. Sodium - Atomic number 11

Mass number 23

[pic]

6. Potassium - Atomic number 19

Mass number 39

[pic]

7. Argon - Atomic number 18

Mass number 40

[pic]

-----------------------

16

16

16

4

4

5

7

7

7

11

11

12

18

19

19

20

18

22

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