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Element X is a solid at room temperature. It needs one electron per atom to gain the electronic structure of a noble gas. It is the least reactive element in its group. What is the element X? 1.At 2.Cs
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42 votes
42 votes
Element X is a solid at room temperature.

It needs one electron per atom to gain the electronic structure of a noble gas.
It is the least reactive element in its group.
What is the element X?

1.At
2.Cs
3. F
4. Li​

User Dheinz
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1 Answer

9 votes
9 votes

Answer:

Element X is Cs or cesium

User Mike Robinson
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