Ionization of elements

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mbaker4E
Posts: 69
Joined: Fri Sep 28, 2018 12:26 am

Ionization of elements

Postby mbaker4E » Sun Oct 28, 2018 2:33 pm

Why do certain elements tend to have certain ions like Cu ---> Cu+ and Cu2+? but not Cu3+?

005115864
Posts: 64
Joined: Fri Sep 28, 2018 12:15 am

Re: Ionization of elements

Postby 005115864 » Sun Oct 28, 2018 2:59 pm

This is due to fact that elements have the tendency to look for more stable states. Therefore, to have a stable ground state, elements tend to follow the Pauli exclusion principle and Hund's rule. If these rules are not followed, then it is in an excited state.

404536963
Posts: 29
Joined: Fri Feb 02, 2018 3:02 am

Re: Ionization of elements

Postby 404536963 » Sun Oct 28, 2018 10:13 pm

This is because that each element is different in the number of electrons it wants to take/give away when bonding. So for Cu, it has 2 valence electrons, so it would want to give up those 2 to make it stable, but not more than is in its valence ring. It also might want to take electrons to make it stable, but since it would need a large number, it is more unlikely.

Diviya Khullar 1G
Posts: 59
Joined: Fri Sep 28, 2018 12:19 am

Re: Ionization of elements

Postby Diviya Khullar 1G » Sun Oct 28, 2018 10:42 pm

Elements want to achieve an electron configuration that is like the closest inert gas, because this is the most stable form for the atom to be in. So, they will lose or gain just enough electrons so that they can have a full outer shell or electrons. In the case of copper, it has 2 valence electrons and according to the octet rule, it needs an outer shell with 8 electrons. So, it will just give away those 2 electrons, resulting in the cation Cu^(2+)


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