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SCORPION-xisa [38]
3 years ago
12

If an atom has 34 protons and 40 neutrons, what is its mass number? 40 6 74 34

Chemistry
2 answers:
Darya [45]3 years ago
7 0
Protons+Neutrons
34+40= 74
schepotkina [342]3 years ago
5 0

The answer is 74

The mass equals the number protons and neutrons.

34+40= 74

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