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কোনটি Kr এর ইলেকট্রন বিন্যাস?

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}

3 d^{10} 4 s^{2} 4 p^{6}

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}

3 d^{10} 4 s^{2} 4 d^{10} 5 s^{2} 5 p^{6}

None of these

ANSWER : 2

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