Under most conditions, an atom of one of the noble gases isinert because their outer orbital contains the maximum number of electrons; the completion of their outer orbital makes these elements more stable and less able to react with other atoms and molecules.
A)because their outer orbital contains the maximum number of electrons; the completion of their outer orbital makes these elements more stable and less able to react with other atoms and molecules.
B)because its outer orbital contains
...
A)because their outer orbital contains the maximum number of electrons; the completion of their outer orbital makes these elements more stable and less able to react with other atoms and molecules.
B)because its outer orbital contains
...
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