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Task 3. Write the period number and group number of the
following elements.
Element Name Period Number Group Num
1. Iron
2. Aluminum
3. Tungsten
4. Radon
5. Lithium
b. Mengonic
7. Phosphorous
8. Copper
9. Rubidium
10. Technetium​

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Crispondemarigold04go

Element name — Period number — Group No.

1. Iron - 26 - 8

2. Aluminum - 13 - 13

3. Tungsten - 74 - 6

4. Radon - 86 - 18

5. Lithium - 3 - 1

6. Mengonic - ¿?

7. Phosphorus - 15 - 15

8. Copper - 29 - 11

9. Rubidium - 37 - 1

10. Technetium - 43 - 7

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