Question

which statement is true about alkali metals? a) they arent very reactive. b) they arent conductors of heat or electricity. c) some of them explode when exposed to water.

Explanation:

• Option A: Alkali metals (Group 1 elements like Li, Na, K) are highly reactive, so A is false.
• Option B: Metals (including alkali metals) are good conductors of heat and electricity, so B is false.
• Option C: Alkali metals like Na, K react vigorously (some even explode) with water, so C is true.

Answer:

C) Some of them explode when exposed to water.