Chapter 4: Q. 4.42 (page 115)

Indium consists of two isotopes, ${}_{49}^{113}I n$ and ${}_{49}^{115}I n$ . If the atomic mass for indium on the periodic table is $114.8$ , are there more atoms of ${}_{49}^{113}I n$ or ${}_{49}^{115}I n$ in a sample of indium?

Short Answer

Expert verified

There are more atoms of ${}_{49}^{115}I n$ in a sample of indium.

Step by step solution

Given Information

We are required to determine which indium isotope is more naturally occurring in nature. Here, we are given the atomic number and the atomic masses of the two isotopes of indium and we also have the average atomic mass of indium.

Explanation

We know that

The atomic mass of an element on the periodic table is used to find the most abundant isotope. The atomic mass of indium is $114.8$ , as can be shown. Although no indium atom has that mass, it is the average mass of an indium sample.

When comparing the atomic masses of ${}_{49}^{113}I n$ and ${}_{49}^{115}I n$ , we can see that the atomic mass number on the periodic table is closer to that of ${}_{49}^{115}I n$ .

We can deduce that ${}_{49}^{115}I n$ is more plentiful.

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Indium consists of two isotopes, ${}_{49}^{113}I n$ and ${}_{49}^{115}I n$ . If the atomic mass for indium on the periodic table is $114.8$ , are there more atoms of ${}_{49}^{113}I n$ or ${}_{49}^{115}I n$ in a sample of indium?

Short Answer

Step by step solution

Given Information

Explanation

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Indium consists of two isotopes, I49113nand I49115n. If the atomic mass for indium on the periodic table is 114.8, are there more atoms of I49113nor I49115nin a sample of indium?

Short Answer

Step by step solution

Given Information

Explanation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Organic Chemistry

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The Earths Atmosphere

Study anywhere. Anytime. Across all devices.

Indium consists of two isotopes, ${}_{49}^{113}I n$ and ${}_{49}^{115}I n$ . If the atomic mass for indium on the periodic table is $114.8$ , are there more atoms of ${}_{49}^{113}I n$ or ${}_{49}^{115}I n$ in a sample of indium?