Questions: What is the atomic number of the isotope with the symbol ^17 mathrmCl^17 ?

Transcript text: What is the atomic number of the isotope with the symbol ${ }^{17} \mathrm{Cl}^{17}$ ? Multiple Choice 17 18 35.45 37

Solution

Solution Steps

Step 1: Understanding the Isotope Notation

The notation ${ }^{17} \mathrm{Cl}^{17}$ represents an isotope of chlorine. In this notation:

The superscript (17) indicates the mass number, which is the sum of protons and neutrons.
The subscript (which is not explicitly given here but is implied) would be the atomic number, which is the number of protons.

Step 2: Identifying the Atomic Number

Chlorine (Cl) has an atomic number of 17, which means it has 17 protons. The atomic number is a unique identifier for each element and does not change between isotopes.