strontium (which the atomic number is not 85 its 38) has 38 protons and 50 neutrons... hope this helps!
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6 protons, 6 neutrons
11 protons and 9 neutrons
Protons: 10 Neutrons: 10
Potassium-40 (K-40) has 19 protons and 21 neutrons.
7 protons, 7 neutrons and 7 electrons