Periodic Trends - Science with Mr. Louie
Periodic Trends
Directions: Graph the periodic trends using the table and graphs below. Afterwards, answer the questions on the back.
|Atomic |Element |Group |Atomic Mass |Atomic |
|Number |Symbol | |(amu) |Radius (pm) |
|Period 1 |
|1 |H |1A |1.01 |37 |
|2 |He |8A |4.00 |31 |
|Period 2 |
|3 |Li |1A |6.94 |152 |
|4 |Be |2A |9.01 |112 |
|5 |B |3A |10.81 |85 |
|6 |C |4A |12.01 |77 |
|7 |N |5A |14.01 |75 |
|8 |O |6A |16.00 |73 |
|9 |F |7A |19.00 |72 |
|10 |Ne |8A |20.18 |71 |
|Period 3 |
|11 |Na |1A |22.99 |186 |
|12 |Mg |2A |24.31 |160 |
|13 |Al |3A |26.98 |143 |
|14 |Si |4A |28.09 |118 |
|15 |P |5A |30.97 |110 |
|16 |S |6A |32.07 |103 |
|17 |Cl |7A |35.45 |100 |
|18 |Ar |8A |39.95 |98 |
|Period 4 |
|19 |K |1A |39.10 |227 |
|20 |Ca |2A |40.08 |197 |
Atomic Mass Trends
[pic]
Atomic Radius Trends
[pic]
Analysis:
1. How did the atomic mass change as you move from left to right on the periodic table? ______________________
2. How did the atomic mass change as you move from top to bottom on the periodic table? ____________________
3. How did the atomic radius change as you moved from left to right on the periodic table? ____________________
4. How did the atomic radius change as you moved from top to bottom on the periodic table? __________________
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