So it's actually going to have the exact same electronĬonfiguration as argon. And so the electron configuration here for calcium with a positive two charge, this calcium cation, is going to be the electron configuration In that 4s sub-shell, in the fourth shell, are gonna go away. Now what do you think is going to happen if we were to lose two electrons? Well those two electrons Let me do this in a new color, let's call this 4s two. And so we're going to have argon and then we're going to have, The number of electrons present in the valence. To have two electrons for that fourth shell. Which electron configuration is an atom in an excited state A. The arrangement of electrons of an element in orbit shells and subshells is known as electron configuration. So it's going to have theĮlectron configuration of argon and then we are going Neutral calcium, the noble gas that comes right before calcium is argon. And so neutral calcium, you could view it, actually let's do it in So the electron configuration of calcium (Ca) which has 20 electrons, can be written as: Ar4s.
As element electron configuration plus#
The electron configuration of a neutral calcium atom and then from that, we can take two of the highest energy electrons away. The electron configuration can be seen as consisting of the core electrons, which is equal to the configuration of the most recent noble gas, plus the valence (outer electron) configuration of the element. To figure this out is first we could figure out What would be its electron configuration? Pause this video and You could do this as a neutral calcium that has lost two electrons. Out the electron configuration of a part positively charged calcium ion. Of 1s two, 2s two, 2p, now it's going to have anĮxtra electron here, 2p six. So the fluoride anion is going to have an electron configuration The fluorine has nabbedĪn electron from someplace and so where will that extra electron go? Well our 2p sub-shell has Pause this video and try to figure it out. The order of filling the orbitals with electrons in the Au atom is an exception to the rule. So if that's the electronĬonfiguration for fluorine, what do you think theĮlectron configuration for fluoride would be? This is just the anion that Three four five electrons in that 2p sub-shell.
And we are going to have, we're talking about a neutral fluorine, we are going to have one two Has nine electrons, and we could just use our The electron configuration of a neutral fluorine atom? All right, now let's work Little bit of practice, try to pause this video and think about what is
Neutral fluorine atom's electron configuration would be. Let's just start looking at some examples. Neutral electron configuration: The neutral electron configuration of an atom is the electron configuration under the assumption that the atom has not gained or. In many videos we have already talkedĪbout electron configuration and now in this video we're going to extend that understanding by thinking about the electronĬonfiguration of ions.
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