5
QuizMultiple Choice
Unit Test — Cumulative exam
Question 5 • TX-Chemistry B
A radioactive nuclide has 53 protons and 78 neutrons. Which is the symbol of this nuclide?
Answer
A
Superscript 53 subscript 78 upper I.
B
Superscript 78 subscript 53 upper P t.
C
Superscript 131 subscript 78 upper P t.
D
Superscript 131 subscript 53 upper I.