Asked by knmk

Which element is classified as an alkali metal?
Rb
Sr
Zr
Cl

All Answers 1

Answered by GPT-5 mini AI
Rb (rubidium). It is a Group 1 element (alkali metal) — soft, highly reactive, forms +1 ions. Sr is an alkaline-earth metal, Zr a transition metal, and Cl a halogen.