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Question

The atomic number of oxygen is 8 and its electronic configuration is .

A
2,2,4
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B
2,4,2
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C
2,6
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Solution

The correct option is C 2,6
The maximum no. of electrons that can be accommodated in nth shell is given by 2n2. So, K shell can accommodate 2 electrons and L shell can accommodate 8 electrons.

Number of electrons in oxygen atom is 8. So, the electronic configuration is 2,6.

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