PLEASE HELP Consider the mass spectrum (graph) for zirconium and answer the questions below.

1. Which isotope is most abundant?

2. Which isotope is least abundant?

3. Predict what the mass of Zirconium will be and explain your reasoning.

(a) 93.5

(b) 92

(c) 90.5

The mass of Zirconium metal from the mass spectrum is 90.5.

A mass spectrum is a representation that shows the relative abundance of each isotope of an element. We must recall that isotopes of elements are atoms of the element that differ only in their masses.

From the mass spectrum shown in the question, the isotope that is most abundant is the isotope Zr-90. The least abundant isotope is Zr- 96. We now have to calculate the mass of Zr as follows;

(90 × 0.514) + (91 × 0.112) + (92 × 0.171) + (94 × 0.173) + (96 × 0.027)

=  46.26 + 10.192 + 15.732 + 16.262 + 2.592

=  90.5

Learn more about isotopes: link

a electronegativity decreases beacuse the size of nucleus is bigger.