explain limitations of octet rule?? don't spam
Answers
One limitation of the octet rule is that it cannot be applied to the nonmetals after silicon in the Periodic Table. These elements can “expand their octet” and have more than eight valence electrons around the central atom. ... In some molecules the central atom cannot possibly have eight valence electrons.
Lɪᴍɪᴛᴀᴛɪᴏɴs ᴏғ Oᴄᴛᴇᴛ Rᴜʟᴇ:-
⇏Tʜᴇ Iɴᴄᴏᴍᴘʟᴇᴛᴇ Oᴄᴛᴇᴛ ᴏғ Tʜᴇ Cᴇɴᴛʀᴀʟ Aᴛᴏᴍ ɪɴ Sᴏᴍᴇ Cᴏᴍᴘᴏᴜɴᴅs, Tʜᴇ Nᴜᴍʙᴇʀ ᴏғ Eʟᴇᴄᴛʀᴏɴs Sᴜʀʀᴏᴜɴᴅɪɴɢ Tʜᴇ Cᴇɴᴛʀᴀʟ Aᴛᴏᴍ ɪs Lᴇss Tʜᴀɴ Eɪɢʜᴛ.
⇏Tʜɪs ɪs Esᴘɪᴄɪᴀʟʟʏ Tʜᴇ Cᴀsᴇ ᴏғ Eʟᴇᴍᴇɴᴛs Hᴀᴠɪɴɢ Lᴇss Tʜᴀɴ Fᴏᴜʀ Vᴀʟᴇɴᴄᴇ Eʟᴇᴄᴛʀᴏɴs. Exᴀᴍᴘʟᴇs ᴀʀᴇ LiCl, BeH2 Aɴᴅ BCl3.
⇏Iɴ ᴀ Nᴜᴍʙᴇʀ ᴏғ Cᴏᴍᴘᴏᴜɴᴅs ᴏғ Tʜᴇɪʀ Pᴇʀɪᴏᴅ Eʟᴇᴍᴇɴᴛs, Tʜᴇʀᴇ ᴀʀᴇ Mᴏʀᴇ Tʜᴀɴ Eɪɢʜᴛ Vᴀʟᴇɴᴄᴇ Eʟᴇᴄᴛʀᴏɴs Aʀᴏᴜɴᴅ Tʜᴇ Cᴇɴᴛʀᴀʟ Aᴛᴏᴍ.
⇏Tʜɪs ɪs Tᴇʀᴍᴇᴅ ᴀs Tʜᴇ Exᴘᴀɴᴅᴇᴅ Oᴄᴛᴇᴛ. Tʜᴇ Oᴄᴛᴇᴛ Rᴜʟᴇ Dᴏᴇsɴᴏᴛ Aᴘᴘʟʏ ɪɴ Sᴜᴄʜ Cᴀsᴇs. Exᴀᴍᴘʟᴇs ᴏғ
Sᴜᴄʜ Cᴏᴍᴘᴏᴜɴᴅs SF6, H2SO4.
⇏Tʜɪs Rᴜʟᴇ ɪs Bᴀsᴇᴅ ᴏɴ Iɴᴇʀᴛ Nᴏʙʟᴇ Gᴀsᴇs.
Hᴏᴡᴇᴠᴇʀ, Sᴏᴍᴇ Nᴏʙʟᴇ Gᴀsᴇs Cᴏᴍʙɪɴᴇ Wɪᴛʜ Oxʏɢᴇɴ Aɴᴅ Fʟᴜʀɪᴏɴᴇ ᴛᴏ Fᴏʀᴍ ᴀ Nᴜᴍʙᴇʀ ᴏғ Cᴏᴍᴘᴏᴜɴᴅs Lɪᴋᴇ XeF2, KrF2, XeOF2 Eᴛᴄ.
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