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1)

The electronic configuration of $_{59} Pr$ (praseodimium) is

A)

$[ _{54} Xe] 4f^{2}5d^{1}6s^{2}$

B)

$[ _{54} Xe] 4f^{1}5d^{2}6s^{2}$

C)

$[ _{54} Xe] 4f^{3}6s^{2}$

D)

$[ _{54} Xe] 4f^{3}5d^{2}$

Answer:

Option C

Explanation:

Electronic configuration of $_{59} Pr$ (praseodimium)

$[ Xe] 4f^{3}5d^{0}6s^{2}$

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