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Rank the following elements in order of atomic number, with the lowest as 1 and the highest as 5.
1
2
3
4
5
Technetium
1
2
3
4
5
Cesium
1
2
3
4
5
Rubidium
1
2
3
4
5
Erbium
1
2
3
4
5
Rutherfordium
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