Question

alkal metals are highly __ since they __ easily to form ions
nonreactive, lose 1 electron
reactive, lose 1 electron
reactive, gain 1 electron
nonreactive, lose 2 electrons

Explanation:

Alkali metals (Group 1 elements like Li, Na, K etc.) have 1 valence electron. They want to achieve a stable electron configuration (similar to noble gases). So, they lose 1 electron easily. And because they can lose electrons readily to form positive ions (e.g., \(Na
ightarrow Na^{+}+e^{-}\)), they are highly reactive.

Answer:

reactive, lose 1 electron