What is the mass number, symbol, and charge of an atom that contains 19 protons, 20 neutrons and 19 electrons?
1 answer:
Answer:
Explanation:
mass number = 19 + 20 = 39 (protons + neutrons)
The charge is 0. This is an atom
The symbol = K
Protons: 19
Electrons: 19
Neutrons: 20
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