We're asked to** ****calculate the percent natural abundance of Wt-297** isotope.

We’re given a diagram showing 50 atoms of a fictitious element called westmontium (Wt):

**red**spheres:**Wt-296****blue**spheres:**Wt-297****green**spheres:**Wt-298**

Recall that **percent abundance** is the percent value of the number of naturally occurring isotopes for a given element. We will use the equation:

$\overline{){\mathbf{Percent}}{\mathbf{}}{\mathbf{Abundance}}{\mathbf{=}}\frac{\mathbf{number}\mathbf{}\mathbf{of}\mathbf{}\mathbf{isotope}}{\mathbf{total}\mathbf{}\mathbf{number}\mathbf{}\mathbf{of}\mathbf{}\mathbf{isotopes}}{\mathbf{\times}}{\mathbf{100}}}$

To do so, we need to** count the # of Wt-297 isotopes** from the given diagram:

Below is a representation of 50 atoms of a fictitious element called westmontium (Wt). The red spheres represent Wt-296, the blue spheres Wt-297, and the green spheres Wt-298.

Calculate the percent natural abundance of Wt-297 isotope.

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