The electron configuration of $_{11} N a^{23}$ is

1 s^{2}, 2 s^{2}, 2 p^{5}, 3 s^{2}

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1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{1}

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1 s^{2}, 2 s^{2}, 2 p^{4}, 3 s^{1}, 3 p^{2}

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1 s^{1}, 2 s^{1}, 2 P^{6}, 3 s^{2}, 3 p^{1}

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Solution

The correct option is B $1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{1}$
The electronic configuration of $_{11} N a^{23}$ is $1 s^{2}, 2 s^{2}, 2 p^{6}, 3 s^{1}$ . It can also be written as $[N e] 3 s^{1}$ .
Two electrons are present in the first shell, 8 electrons are present in the second shell and 1 electron is present in the last shell.

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The electron configuration of 11Na23 is

The correct option is B 1s2,2s2,2p6,3s1The electronic configuration of 11Na23 is 1s2,2s2,2p6,3s1. It can also be written as [Ne]3s1.Two electrons are present in the first shell, 8 electrons are present in the second shell and 1 electron is present in the last shell.

The electron configuration of $_{11} N a^{23}$ is