Question

drag the words/phrases to complete the sentences. alkali metals are highly reactive since they easily to form ions. review progress question 2 of 15 periodic table reactive nonreactive gain 1 electron lose 1 electron lose 2 electrons

Explanation:

Alkali metals are in Group 1 of the periodic table. They have 1 valence - electron. To achieve a stable electron configuration, they easily lose this 1 electron, which makes them highly reactive.

Answer:

reactive, lose 1 electron