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vova2212 [387]
4 years ago
11

Please help!

Biology
1 answer:
liraira [26]4 years ago
7 0
The correct answer is b.
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Answer:

5. All magnesium atoms have the same number of neutrons

Explanation:

Magnesium (Mg) is a chemical element. Its atomic number (Z) is 12 (number of protons in the nucleus of the Mg atom).

The Magnesium has three stable isotopes: 24Mg, 25Mg and 26Mg. All these isoforms have 12 protons in their atoms (same atomic number), however they  vary in the mass number of the atom (M).

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25Mg = 12 protones + 13 neutrons

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