Question

An element is soft and can be cut easily with a knife. It is very reactive and cannot be kept open in the air. It reacts vigorously with water. This element is most likely to be:



a)magnesium
b)aluminium
c)potassium
d)phosphorus

Answer 1

Answer:

C) Potassium

Explanation:

Potassium is soft and and can be cut easily with a knife