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Reil [10]
3 years ago
12

I WILL RATE BRAINLIEST!!

Chemistry
2 answers:
aivan3 [116]3 years ago
8 0
80 protons + 120 neutrons = 200
You're right. The mass number is 200.
Taya2010 [7]3 years ago
3 0
The answer is 200 for sure!!!!!
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