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Chapter 2: Problem 91

Using a suitable reference such as the CRC Handbook of Chemistry and Physics or http://www.webelements.com, look up the following information for nickel: (a) the number of known isotopes, (b) the atomic masses (in amu) and (c) the natural abundances of the five most abundant isotopes.

Short Answer

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For nickel, (a) there are 31 known isotopes. (b) The atomic masses of the five most abundant isotopes are: \(^{58}\)Ni: 57.9353479 amu, \(^{60}\)Ni: 59.9307906 amu, \(^{61}\)Ni: 60.9310604 amu, \(^{62}\)Ni: 61.9283488 amu, and \(^{64}\)Ni: 63.9279696 amu. (c) The natural abundances of these isotopes are: \(^{58}\)Ni: 68.0769%, \(^{60}\)Ni: 26.2231%, \(^{61}\)Ni: 1.1399%, \(^{62}\)Ni: 3.6345%, and \(^{64}\)Ni: 0.9256%.

Step by step solution

01

Access the website for information about nickel

Visit the website http://www.webelements.com/nickel/. Here you will find relevant data and information related to the element nickel.
02

Find the number of known isotopes

On the website, look for the section called "Isotopes." Here, you will find the information related to isotopes of nickel. The website states that there are 31 known isotopes of nickel.
03

Find the atomic masses and natural abundances of the five most abundant isotopes

In the same section (Isotopes), you will notice a table showing the isotopes of nickel and some of their properties. From this table, you can identify the five most abundant isotopes and their respective properties. 1. Isotope \(^{58}\)Ni: - Atomic Mass: 57.9353479 amu - Natural Abundance: 68.0769% 2. Isotope \(^{60}\)Ni: - Atomic Mass: 59.9307906 amu - Natural Abundance: 26.2231% 3. Isotope \(^{61}\)Ni: - Atomic Mass: 60.9310604 amu - Natural Abundance: 1.1399% 4. Isotope \(^{62}\)Ni: - Atomic Mass: 61.9283488 amu - Natural Abundance: 3.6345% 5. Isotope \(^{64}\)Ni: - Atomic Mass: 63.9279696 amu - Natural Abundance: 0.9256%
04

Summary of the information

For nickel, (a) There are 31 known isotopes. (b) The atomic masses of the five most abundant isotopes are: - \(^{58}\)Ni: 57.9353479 amu - \(^{60}\)Ni: 59.9307906 amu - \(^{61}\)Ni: 60.9310604 amu - \(^{62}\)Ni: 61.9283488 amu - \(^{64}\)Ni: 63.9279696 amu (c) The natural abundances of the five most abundant isotopes are: - \(^{58}\)Ni: 68.0769% - \(^{60}\)Ni: 26.2231% - \(^{61}\)Ni: 1.1399% - \(^{62}\)Ni: 3.6345% - \(^{64}\)Ni: 0.9256%

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