chzlkiasFav6asal chzlkiasFav6asal

02-05-2017
Chemistry

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What element forms an ion with an electronic configuration of [kr] and a –2 charge?

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JavierCollante JavierCollante

02-05-2017

Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.

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Аноним Аноним

02-05-2017

Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.

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