Question

1. choose the best answer.

which metal group is the least reactive?
noble gases
transition
alkali
alkaline earth

Explanation:

Noble gases are not metals. Alkali metals (Group 1) are highly reactive as they have one valence electron that is easily lost. Alkaline - earth metals (Group 2) have two valence electrons and are also reactive. Transition metals have a relatively stable electron configuration compared to alkali and alkaline - earth metals. Their reactivity is generally lower due to factors such as the shielding effect and the energy levels of their electrons.

Answer:

transition