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diamong [38]
3 years ago
7

A/ Một nguyên tử X có tổng số các loại hạt bằng 18

Biology
1 answer:
Nikitich [7]3 years ago
7 0

Explanation:

a) p+e+n=18

mà p=e=z => 2p +n=18

câu a có thiếu dữ kiện không?

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