Question

which of the following is the most active metal :

1) lithium 2) sodium 3) potassium 4) rubidium

Answer 1

potassium is the most racing metal because it is placed in the top of the reactivity series

Answer 2

3). Potassium is the most active metal.

• Potassium is the most active metal because it has more number shells compared to sodium and so it becomes easy to remove one electron from its outermost orbital.
• It belongs to groups IA and IIA of the periodic table.
• The reactivity of metal depends on the tendency of electrons to lose electrons and potassium readily loses electrons to form a cation.