An element has an atomic mass of 167 with an atomic number OF 68. How many protina elections and neutron Dora IT have
A 55 protons 56 protons and 55 neutrons
B 68 protons 68 protons and 99 nuetrons
C 68 protons 99 protons and 68 neutrons
D 99 protons 68 protons and 68 neutrons
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