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which calcium ion is more stable the Ca2+ or Ca+?? watch

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    "Name an atom with the same electron configuration as the Ca2+ ion and an atom with the electron configuration of an Ca+ ion. Which calcium ion of the two is the most stable? Is this an anion or a cation?" This is what i have been asked to answer and i know thatArgon has the same EC as Ca2+ and i think that potassium has the same as Ca+ but i not sure and i think that bth are anions. Any help at all would be great,thank you
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    Which is more stable, Ar or K?
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    (Original post by alow)
    Which is more stable, Ar or K?
    K is the least stable i think? would that make Ca+ the least stable ion?
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    (Original post by blink3456)
    K is the least stable i think? would that make Ca+ the least stable ion?
    Exactly. K is much less stable than Ar. Ca2+ is therefore much more stable than Ca+.
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    (Original post by alow)
    Exactly. K is much less stable than Ar. Ca2+ is therefore much more stable than Ca+.
    Thank you so much
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    Ca2+
    bc its in group 2
    so it needs to lose 2 electrons to have a full shell and become stable
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    Which is more stable, Na+ or Na-?

    Na+?

    In which case, why is ionisation of Na endothermic, but electron gain exothermic?

    Just saying.
 
 
 
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