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Atomic Number and Mass Number

Write the sub...

Question

Write the subshell electronic configuration of the following elements and find the blocks to which they belong
$18 A r$ :

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Solution

$18 A r$ : Atomic number $= 18$

$E . C : 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}$

$b l o c k : - p b l o c k$

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