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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: blackcat on September 25, 2019, 12:18:19 PM

Title: Closed electronic shell
Post by: blackcat on September 25, 2019, 12:18:19 PM
Ti4+ has a "closed electronic shell"?

What does that mean??
Title: Re: Closed electronic shell
Post by: chenbeier on September 25, 2019, 01:42:18 PM
Write down the electronical configuration of Ti4+. Compare this with Argon.
Title: Re: Closed electronic shell
Post by: blackcat on September 25, 2019, 01:52:58 PM
Quote from: chenbeier on September 25, 2019, 01:42:18 PM
Write down the electronical configuration of Ti4+. Compare this with Argon.

Okay, it means it has the same electronic configuration of Argon. So "closed electronic shell" means very stable electronic configuration where further addition or loss of electron from Ti4+ is difficult, right?

What I was asking is what is so special about "closed electronic configuration".
Title: Re: Closed electronic shell
Post by: chenbeier on September 25, 2019, 02:02:24 PM
The addition of electron is no problem. Ti3+ and Ti2+ are also existing. Loss of electrons is not possiible.
Title: Re: Closed electronic shell
Post by: blackcat on September 25, 2019, 02:10:54 PM
Quote from: chenbeier on September 25, 2019, 02:02:24 PM
The addition of electron is no problem. Ti3+ and Ti2+ are also existing. Loss of electrons is not possiible.

So the term "closed" only means it has a noble electronic configuration, nothing special?

"Open" means "not closed" then, right?
Title: Re: Closed electronic shell
Post by: Corribus on September 25, 2019, 02:14:36 PM
There are some implications for spectroscopic transitions involving transition metal centers.