Chapter 4: Q. 4.41 (page 115)

Copper consists of two isotopes, ${}_{29}^{63}C u$ and ${}_{29}^{65}C u$ .If the atomic
mass for copper on the periodic table is $63.55$ , are there more
atoms of ${}_{29}^{63}C u$ and ${}_{29}^{65}{C u}$ in a sample of copper?

Short Answer

Expert verified

There are more atoms of ${}_{29}^{63}C u$ in a sample of copper.

Step by step solution

Given Information

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

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 copper is $63.55 a m u$ , as can be shown. Although no copper atom has that mass, it is the average mass of a copper sample.

When comparing the atomic masses of ${}_{29}^{63}C u$ and ${}_{29}^{65}C u$ , we can see that the atomic mass number on the periodic table is closer to that of ${}_{29}^{63}C u$ .

We can deduce that ${}_{29}^{63}C u$ is more plentiful.

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Copper consists of two isotopes, ${}_{29}^{63}C u$ and ${}_{29}^{65}C u$ .If the atomic
mass for copper on the periodic table is $63.55$ , are there more
atoms of ${}_{29}^{63}C u$ and ${}_{29}^{65}{C u}$ in a sample of copper?

Short Answer

Step by step solution

Given Information

Explanation

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Copper consists of two isotopes, C2963uand C2965u.If the atomicmass for copper on the periodic table is 63.55, are there moreatoms of C2963uand Cu2965in a sample of copper?

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

Nuclear Chemistry

Organic Chemistry

Ionic and Molecular Compounds

Chemical Reactions

Physical Chemistry

Chemical Analysis

Study anywhere. Anytime. Across all devices.

Copper consists of two isotopes, ${}_{29}^{63}C u$ and ${}_{29}^{65}C u$ .If the atomic
mass for copper on the periodic table is $63.55$ , are there more
atoms of ${}_{29}^{63}C u$ and ${}_{29}^{65}{C u}$ in a sample of copper?