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courtrigrad
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How do you know whether a group of ions is isoelectronic? Also what does this notation mean:
[tex] Ca: [Ar]4s^{2} [/tex]?
Thanks
[tex] Ca: [Ar]4s^{2} [/tex]?
Thanks
An atom or ion is isoelectonic with another atom or ion if the two contain equal numbers of electrons. This can easily be determined from the Atomic Numbers of the 2 species under consideration:courtrigrad said:How do you know whether a group of ions is isoelectronic? Also what does this notation mean:
[tex] Ca: [Ar]4s^{2} [/tex]?
Thanks
This has been said but not written so simply for clarity:xanthym said:The terminology:
[tex] Ca: [Ar]4s^{2} [/tex]
indicates that the neutral Ca atom has the same electron energy/orbital structure as neutral Ar PLUS 2 ADDITIONAL ELECTRONS in the "s" Sublevel of the 4th Energy Level (Principle Quantum Number = 4).
Personally I do not understand why I cannot short hand but there is no mark for it in the mark scheme so it is better to be safe than sorry.dextercioby said:Nope.It would be ridiculous,if one of the teachers would not accept the shorthanded notation...
But i know that there are a lotta dumb profs out there...:yuck:
Daniel.
Isoelectronic ions are ions that have the same number of electrons. This means that they have the same electronic configuration and therefore similar chemical properties.
Isoelectronic ions are formed when atoms gain or lose electrons to achieve a stable electronic configuration, typically with a full outer energy level. This is known as the octet rule.
Isoelectronic ions are important in understanding chemical bonding and reactivity. They have similar properties, which allows them to form similar compounds and participate in similar chemical reactions.
Ca notation is a shorthand way of representing isoelectronic ions. It involves writing the symbol of the noble gas that has the same number of electrons as the ion, followed by the remaining electrons in brackets. For example, Ca notation for the isoelectronic ion of oxygen (O^2-) would be [He] because helium has 2 electrons, the same as the O^2- ion.
Yes, isoelectronic ions can have different charges. They are isoelectronic because they have the same number of electrons, but they may have gained or lost different numbers of electrons to achieve this. This results in different charges for the ions.