Which one of the following molecules or ions contains an exception to the octet rule?

Name: Which one of the following molecules or ions contains an exception to the octet rule?
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Question

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XeCl contains an exception to the octet rule because xenon has a valence electron shell of 5 and can accommodate up to 8 electrons in its valence shell as it forms XeF8, but in XeCl, it shares only one electron with chlorine and thus has only 7 electrons in its valence shell.

Which One of the Following Molecules or Ions Contains an Exception