‘breaking into the core"

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Hello,

Can i know please the meaning of "‘breaking into the core" in this context: "This is the first clear case of an alkali metal not only losing its single easily ionized valence electron in bonding, but also ‘breaking into the core’ in its bonding with several fluorines.”

Thanks
 
  • Cenzontle

    Senior Member
    English, U.S.
    This is not a question of grammar so much as a question of chemistry.
    I studied chemistry long ago. Do they still refer to "shells" of electrons surrounding the nucleus of an atom?
    The outer shell is most available for bonding with other atoms.
    Could it be that "the core" refers to an inner shell of electrons?
     
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