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Hãy viết kí hiệu của nguyên tử X khi a) X có 6p và 8n
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Hãy viết kí hiệu của nguyên tử X khi
a) X có 6p và 8n

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A=p+n=6+8=12\\X=12=>Cacbon \\_(6) ^(12) C

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