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24-11-2016
Chemistry

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Is it possible for a cation to be isoelectronic with anion from the same period? Explain

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syed514 syed514

25-11-2016

Nope, they're at various closures of the table. say Br and K
(anion) Br picks up an electron to wind up isoelectronic with Kr
(cation) K loses an electron to wind up like Ar
unless K picks up 7 e or Br loses 7 e, this is unthinkable.

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