Question

Explain:
(i) Alkali metals are soft and can be cut with help of a knife.
(ii) Potassium is more reactive than sodium.

Answer 1

Hey friend !

_____________________

Here's your answer :

1. Alkali metals are soft and can be cut with help of knife. These are some of the metals which are very soft and can be cut with the knife.
Example : Lithium

2. Potassium is more reactive than sodium . It is more reactive than sodium as because the potassium is at the top place in reactivity aeries which indicates its high reactivity.

# Hope it helps #

Answer 2

potassium K is more reactive than sodium Na because due to large size of potassium can easily donate it's electrons while sodium has small size as compared to potassium . Hence potassium is more reactive than sodium