Sodium is less reactive than _________.

Q. Sodium is less reactive than copper.

Q. Explain why is sodium less reactive than potassium.

Q. A metal less reactive and another metal more reactive than hydrogen are:

Q. Sodium is a very reactive metal.

Q. Which of the following is the correct conclusion. Also, give the reason?

Observation	I	II	III
Solution after reaction	Colourless	Colourless	Colourless
Metal Deposited	Zn	Cu	Fe

(a) Al is more reactive than Cu and Fe but less reactive than Zn
(b) Al is more reactive than Cu but less reactive than Zn and Fe
(c) Al is more reactive than Zn and Cu but less reactive than Fe
(d) Al is more reactive than Zn, Cu, Fe.