Question

In the second period which is the most reactive metal?

Answer 1

LITHIUM IS THE MOST REACTIVE ALKALINE EARTH METAL WHICH IS IN SECOND PERIOD.

Answer 2

Caesium, the most reactive metal in the periodic table, reacts extremely violently – hence why it can't be demonstrated in a classroom! This can be compared to other common metals, such as iron and copper, which produce no reaction when dropped into water.