A transition element $X$ has a configuration $[A r] {3 d}^{4}$ in its $+ 3$ oxidation state.
Its atomic number is not:

25

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26

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22

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19

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Solution

The correct options are
A $26$
B $22$
D $19$
The atomic number for Argon is 18. There are 4 electron in the d shell and a +3 oxidation state. Hence the atomic number is 25.

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Similar questions

[A r] 3 d^{4}

X

[A r] 3 d^{4}

+ 3

3 d^{4}

[A r] d^{4}

An element has $[A r] 3 d^{4}$ configuration in its +3 oxidation state. The atomic number of element is:

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