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Electronic Configuration of d-Block Elements

What is the n...

Question

What is the noble gas configuration for the following: fluorine, phosphorus, bromine, manganese, copper?

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Solution

$P, Z = 15 [N e] 3 s^{2} 3 p^{3}$
$B r, Z = 35, [A r] 3 d^{10} 4 s^{2} 4 P^{5}$
$M n, Z = 25 [A r] 3 d^{5} 4 s^{2}$
$C u, Z = 29 [A r] 3 d^{10} 4 s^{1}$
For copper an examiner would probably accept $[A r] 3 d^{9} 4 s^{2}$

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