central atom

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central atom

Postby Annabella_Amato_1I » Sun Nov 08, 2020 10:19 pm

I know that the central atom in the Lewis structure has to have at least 2 other bonds, however is there a limit to how many bonds it can have? Thanks!

Kylie McCauley 1D
Posts: 60
Joined: Wed Sep 30, 2020 9:44 pm

Re: central atom

Postby Kylie McCauley 1D » Sun Nov 08, 2020 10:33 pm

The central atom, most of the time, has to have at least 8 valence electrons, so the amount of bonds it forms depends on the other atoms in the compound. Atoms like phosphorous can be a central atom with an expanded octet of 10 atoms because it uses the d orbital. But it depends on the amount of other atoms involved in the molecule you're forming.

Gian Boco 2G
Posts: 81
Joined: Wed Sep 30, 2020 9:36 pm

Re: central atom

Postby Gian Boco 2G » Sun Nov 08, 2020 11:24 pm

Keep track of the number of valence electrons it has by looking at what group it is under in the periodic table. The number of bonds can surpass that however if that central element is passed period 3 because these elements can use their 3d state to accommodate extra valence electrons past 8.

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