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Question

নিম্নের ইলেকট্রন বিন্যাসের কোনটির পারমাণবিক ব্যাসার্ধ (atomic radius) সবচেয়ে বেশী?

1 s^{2} 2 s^{1}

1 s^{2} 2 s^{2} 2 p^{2}

1 s^{2} 2 s^{2} 2 p^{1}

1 s^{2} 2 s^{2}

ANSWER : 1

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