Calcium, magnesium, and strontium are near each other on the periodic table and have some characteristics in common, but they differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?

Question

calcium, magnesium, strontium
magnesium, calcium, strontium
strontium, calcium, magnesium
strontium, magnesium, calcium

Answer 1

The correct order of reactivity for the metals calcium, magnesium, and strontium, from most reactive to least reactive, is:

strontium, calcium, magnesium.

Strontium is more reactive than calcium, and magnesium is the least reactive of the three. Thus, the option "strontium, calcium, magnesium" accurately reflects this order.