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fsci
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I was thinking [Ar] 4s^2, 3d^10, 4p^4 ?
Yes, 3d104s24p4fsci said:I was thinking [Ar] 4s^2, 3d^10, 4p^4 ?
Krypton (Kr) has an atomic number of 36, meaning it has 36 electrons. When it forms a +2 ion, it loses two electrons, leaving it with an electron configuration of 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6.
The electron configuration of neutral Kr is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6, while the electron configuration of Kr2+ is 1s2 2s2 2p6 3s2 3p6 3d10 4s0 4p6. The only difference is that Kr2+ has two less electrons in the 4s orbital, resulting in a +2 charge.
Krypton (Kr) is a noble gas with a full outer electron shell. In order to become stable, it must lose two electrons to achieve a full outer shell. This results in a +2 charge for the Kr2+ ion.
The electron configuration of Kr2+ is significant because it shows the arrangement of the electrons in the ion and how it differs from neutral Kr. This information can help predict the chemical and physical properties of Kr2+ and how it will interact with other elements.
The electron configuration of Kr2+ makes it a stable ion, as it has a full outer electron shell. This stability makes it less reactive compared to other elements that are seeking to gain or lose electrons to achieve a full outer shell. This is why noble gases, such as krypton, are often referred to as "inert" or "unreactive" elements.