The central atom

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Kristy 1F
Posts: 31
Joined: Thu Sep 27, 2018 11:19 pm

The central atom

Postby Kristy 1F » Sun Nov 25, 2018 10:18 pm

Hi, I’m wondering that the central atom should depends on the least electronegativity or the least ionization energy. And also, could you explain exact concept of electronegativity and the ionization energy.
Thank you

mahika_nayak_3L
Posts: 33
Joined: Thu Sep 27, 2018 11:26 pm

Re: The central atom

Postby mahika_nayak_3L » Sun Nov 25, 2018 10:56 pm

The central atom should have the lowest ionization energy, which refers to the energy required to remove an electron. Electronegativity refers to the ability of an atom to attract electrons.

Grace Diaz 3F
Posts: 30
Joined: Thu Sep 27, 2018 11:24 pm

Re: The central atom

Postby Grace Diaz 3F » Sun Nov 25, 2018 11:24 pm

The central atom should be the same as for a Lewis structure, in which we choose the atom with the lowest ionization energy to be the center of the structure. The ionization energy is the minimum energy required to remove an electron from an atom. Electronegativity refers to the pulling power of an atom, which grows as ionization energy and electron affinity increase.

Minsub Lee 3E
Posts: 32
Joined: Thu Sep 27, 2018 11:25 pm

Re: The central atom

Postby Minsub Lee 3E » Sun Nov 25, 2018 11:33 pm

Both ionization energy and electronegativity increases as you move up and right of the periodic table. Electronegativity decreases as you go down the group because the increasing number of energy levels cause the outer electrons to be further away from the nucleus. Ionization energy increases as you go up the periodic table because with less energy levels, the nucleus has a stronger pull on the electrons, so it is harder to take.


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