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SeO2F2 does, the other two don't

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14y ago
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6mo ago

Yes, SeO2F2 and ONF3 contain atoms with expanded octets. In SeO2F2, the selenium atom has 12 electrons around it, exceeding the octet. In ONF3, the nitrogen atom has 10 electrons around it, also exceeding the octet. However, GaCl3 does not have any atoms with expanded octets as gallium follows the octet rule.

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Q: Does SeO2F2 GaCl3 and ONF3 contain atoms with expanded octet?
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