which family has a full valence shell, making them the least reactive group of elements? noble gases halogen…
which family has a full valence shell, making them the least reactive group of elements? noble gases halogen rare earth metals alkali metals
Answer
Brief Explanations:
Noble gases have a full valence - shell configuration which makes them very stable and least reactive. Halogens have 7 valence electrons and are highly reactive to gain one electron for a full shell. Rare earth metals and alkali metals also readily lose electrons to achieve a stable state.
Answer:
noble gases