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Chemistry, 18.03.2021 03:00 marcos86

What is the mass number of the atom shown?
a. 11
b. 18
d. 20
C. 19

What is the mass number of the atom shown?
a. 11
b. 18
d. 20
C. 19

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What is the mass number of the atom shown?
a. 11
b. 18
d. 20
C. 19
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