Question

Which statement is correct for the element of proton number 19?
A It is a gas that dissolves in water
B It is a hard metal that is not very reactive with water
C It is a non-metal that burns quickly
D It is a soft metal that is highly reactive with water

Answer 1

Answer:

D

Explanation:

From periodic table : proton number 19  corresponds to K  (potassium)

  which is very reactive with water