Question

which of the following elements is most likely to react vigorously with water?
a. mg
b. na
c. al
d. li

Explanation:

• Sodium (Na) is an alkali metal. Alkali metals are highly reactive with water. The reaction of sodium with water is very vigorous, producing sodium hydroxide and hydrogen gas.
• Magnesium (Mg) reacts with water, but the reaction is not as vigorous as that of sodium.
• Aluminum (Al) reacts with water under certain conditions, but the reaction is not vigorous.
• Lithium (Li) is also an alkali metal, but it reacts less vigorously with water compared to sodium.

Answer:

B. Na