Multiple Choice
If an atom has 43 electrons,56 neutrons,and 43 protons,what is its approximate atomic mass? What is the name of this element?
A) atomic mass,137 amu; Barium
B) atomic mass,99 amu; Technetium
C) atomic mass,99 amu; Radon
D) atomic mass 142 amu; Einsteinium
Correct Answer:
Verified
Correct Answer:
Verified
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