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Flura [38]
3 years ago
14

The isotope of iodine with mass number 131 is often used in medicine as a radioactive tracer. write the symbol for this isotope

indicating both mass number and atomic number.
Chemistry
1 answer:
vodka [1.7K]3 years ago
8 0
Iodine - 113, means iodine with mass number 113

To specify a particular isotope, add superscript and subscript on the left of symbol.

The superscript indicates the mass number (number of protons + neutrons)

The subscript indicates the atomic number (number of protons)

The iodine - 113 is writen

113
      I        [this the letter i]
 53

superscript 113 on the left ofd the symbol is the mass number = protons + neutrons

I is the symbol (letter i)

subscript 53 on the left of the symbol is the atomic number (number of protons)
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