Question

based on its location on the periodic table, which metal is likely to be less reactive than rubidium and more reactive than calcium?
o potassium (k)
o cesium (cs)
o magnesium (mg)
o titanium (ti)

Explanation:

• For alkali metals (group 1), reactivity increases down the group. Rubidium (Rb) is more reactive than potassium (K).
• For alkaline - earth metals (group 2), reactivity also increases down the group. Calcium (Ca) is more reactive than magnesium (Mg).
• Cesium (Cs) is below rubidium in group 1, so it is more reactive than rubidium.
• Titanium (Ti) is a transition metal and is generally less reactive than group 1 and group 2 metals in the context of simple reactivity trends related to group - based periodic trends for the given comparison.

Answer:

A. potassium (K)