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A certain atom has 11 electrons, 8 neutrons, and a charge of -1. What is its atomic mass?
A. 19
B. 15
C. 11
D. 18

User Pjmil
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1 Answer

5 votes

Answer:

19

Step-by-step explanation:

To find the atomic mass, you have to add together the number of neutrons and protons. It gives you the number of neutrons and the number of electrons is the same amount as the protons

User Venk
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