hydtrsd5045 hydtrsd5045

25-03-2024
Chemistry

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Which two of the following are isotopes of the same element: 31 16x, 31 15x, 32 16x?
1) 31 16x and 31 15x
2) 31 16x and 32 16x
3) 31 15x and 32 16x
4) All of the above

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