Chemistry, asked by kram85781, 5 months ago

The atomic number of an element 'y' is 20 . The electronic configuration of the ion having inert gas configuration is ​

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Answered by manissaha129
1

Answer:

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Answered by Anonymous
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Explanation:

The atomic number of Y is 20 and electronic configuration is 2, 8, 8, 2. So there are 2 valence electrons and it must be a part of group 2 and 4th period as there are four shells. The element Y is calcium

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