Crossword puzzle clue "not reactive as gases"

Here are the possible solutions for not reactive as gases clue

Answer
Clue
Relevancy
inert
Clue
Not reactive, as gases
Not reactive, as some gases
Non-reactive, like some gases
Not reactive
Definition
passive
antigen
Clue
Reactive toxin
Definition
a substance that stimulates the production of antibodies, also ANTIGENE
barium
Clue
Reactive earth metal
Definition
a metallic element
cesium
Clue
Highly reactive metal
Definition
a metallic element
flak
Clue
Reactive criticism
Definition
antiaircraft fire

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