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Citrus2011 [14]
3 years ago
12

An atom has 25 protons,20 neutrons, and 19 electrons.Which atom is this,What is the atom's mass number?

Chemistry
2 answers:
ladessa [460]3 years ago
6 0
The atomic mass is 45
Arte-miy333 [17]3 years ago
3 0
The atom is manganese
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