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Chemistry, 10.07.2019 01:30 ogpuhl

What element forms an ion with an electronic configuration of 1s22s22p63s23p63d104s24p6 (or [kr]) and a −2 charge? give the symbol for the element?

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What element forms an ion with an electronic configuration of 1s22s22p63s23p63d104s24p6 (or [kr]) an...

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