# Which of the following is a electronic configuration of Sodium? a) 2,8 b) 8,2,1 c) 2,1,8 d) 2,8,1

\begin{aligned} &\text {The atomic number of sodium=11 }\\ &\text{Electronic configuration of Sodium:} \\ & \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \mathrm{Na} \rightarrow 1 \mathrm{s}^{2} 2 \mathrm{s}^{2} 2 \mathrm{p}^{6} 3 \mathrm{s}^{1} \\ &\text {The correct electronic configuration of sodium is } 2,8,1 \end{aligned}

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