a student attempts to arrange four elements in order from most reactive to least reactive
19k 39.10 , 12 mg 24.31 , 6c 12.01 , 2he 4.00
The order from most reactive to least reactive would be:
1. 2he (Helium) - 4.00
2. 6c (Carbon) - 12.01
3. 12 mg (Magnesium) - 24.31
4. 19k (Potassium) - 39.10
This order is based on the reactivity trend in the periodic table, where elements with lower atomic numbers tend to be more reactive. Helium is the least reactive of the elements listed, while Potassium is the most reactive.