the periodic table can be used to predict properties of elements. which two elements are highly reactive…

the periodic table can be used to predict properties of elements. which two elements are highly reactive with water and can exist as cations? a. na b. k c. mg d. f e. i

the periodic table can be used to predict properties of elements. which two elements are highly reactive with water and can exist as cations? a. na b. k c. mg d. f e. i

Answer

Explanation:

Step1: Recall alkali - metal properties

Alkali metals are highly reactive with water and form cations.

Step2: Identify alkali metals in options

Sodium (Na) and potassium (K) are alkali metals.

Answer:

A. Na, B. K