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mars1129 [50]
3 years ago
6

A atom has 20 electrons, 21 neutrons, and 20 protons. What is the atomic mass of the atom?

Chemistry
1 answer:
UNO [17]3 years ago
5 0

name= calcium

atomic mass= 40.078 atomic mass unit

no of protons= 20

no of electrons=20

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