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Modern Periodic Table

Write the ele...

Question

Write the electronic configuration of $K$ and $N e$ ?

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Solution

Electronic configuration of $K$ : $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1}$
Electronic configuration of $N e$ : $1 s^{2} 2 s^{2} 2 p^{6}$

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\begin{matrix} S c - [A r] 3 d^{1} 4 s^{2} & C a - [A r] 4 s^{2} M g - [N e] 3 s^{2} & C o - [A r] 3 d^{7} 4 s^{2} \end{matrix}

What are the use of writing electronic configuration this fashion?

Q. Consider the outermost electronic configuration of silicon as follow:

[N e] 3 s^{2} 3 p^{2}

The given electronic configuration follows:

Q. The valence electronic configuration of an element is

[N e] 3 s^{1}

. The element is :

Write the electronic configuration of $_{19} K^{40}$ .

Q. Write the electronic configuration of chromium and copper:

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