- Elements from the same group in the periodic table are chemically reactive in a similar way
- Alkaline earth metals are highly chemically reactive
- Hence, elements that belong to alkaline earth metals are highly chemically reactive

- Elements that belong to alkaline earth metals are highly chemically reactive
- Magnesium belongs to alkaline earth metal family , group 2 on the periodic table
- Hence, magnesium is highly chemically reactive

Hence, magnesium is highly chemically reactive
Question
The Periodic Table of the Elements is arranged so that elements with similar characteristics are in the same column. Which element is a highly reactive metal?

Context
- Elements from the same group in the periodic table are chemically reactive in a similar way 
- Alkaline earth metals are highly chemically reactive 
- Magnesium belongs to alkaline earth metal family , group 2 on the periodic table