Problem: What element forms an ion with an electronic configuration of [Kr] and a -2 charge?

🤓 Based on our data, we think this question is relevant for Professor Wallace's class at LEHMAN-CUNY.

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electron configuration of [Kr]


total # eof ion = total # e- of Kr


Kr neutral element

# e- = atomic number

# e- = 36


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Problem Details

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

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Electron Configuration concept. You can view video lessons to learn Electron Configuration. Or if you need more Electron Configuration practice, you can also practice Electron Configuration practice problems.

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Based on our data, we think this problem is relevant for Professor Wallace's class at LEHMAN-CUNY.