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Chemistry, 31.07.2021 07:10 bncm766

F là phi kim mạnh nhất. Li là kim loại có độ âm điện lướn nhất.

He là nguyên tử có bán kính nhỏ nhất.

Be là kim loại yếu nhất trong nhóm IIA.

Trong các phát biểu trên, số phát biểu đúng là

A. 1 B. 2 C. 3 D. 4

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F là phi kim mạnh nhất. Li là kim loại có độ âm điện lướn nhất.

He là nguyên tử có bán...

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