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The only nonradioactive isotope of fluorine has 9 protons and 10 neutrons.
a. What is its mass number.
b. Write the full symbol of this atom.
Electronic configuration of C is: (1) 1s 2 , 2s 2 , 2p 2 , (2) 1s 2 , 2s 2 , 2p 3 (3) 1s 2 , 2s 2 , (4) 1s 2 , 2s 2 , 2p 6
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Purpose
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