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Mn(25) এর ইলেক্ট্রন বিন্যাস কোনটি?

[Ar] 3 d^{7} 4 s^{2}

[Ar] 3 d^{5} 4 s^{2}

[Ar] 3 d^{9} 4 s^{0}

[Ar] 3 d^{10} 4 s^{2}

ANS : 2

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