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Chapter 22: Problem 19

(a) Give the names and chemical symbols for the three isotopes of hydrogen. (b) List the isotopes in order of decreasing natural abundance. (c) Which hydrogen isotope is radioactive? (d) Write the nuclear equation for the radioactive decay of this isotope.

Short Answer

Expert verified
The three isotopes of hydrogen are: Protium (\(^1_1H\)), Deuterium (\(^2_1H\)), and Tritium (\(^3_1H\)). Their natural abundances in decreasing order are: Protium (\(99.98\%\)), Deuterium (\(0.02\%\)), and Tritium (trace amounts). Tritium (\(^3_1H\)) is the radioactive isotope, and its radioactive decay through beta decay can be represented by the nuclear equation: \[^3_1H \rightarrow ^3_2He + ^0_{-1}e .\]

Step by step solution

01

Identify the three isotopes of hydrogen and their chemical symbols

The three isotopes of hydrogen are: 1. Protium - Symbol: \(^1_1H\) 2. Deuterium - Symbol: \(^2_1H\) 3. Tritium - Symbol: \(^3_1H\)
02

Arrange isotopes in order of decreasing natural abundance

The isotopes can be arranged in the following order of decreasing natural abundance: 1. Protium - \(99.98\%\) abundance 2. Deuterium - \(0.02\%\) abundance 3. Tritium - Trace amounts (least abundant)
03

Determine which hydrogen isotope is radioactive

The radioactive hydrogen isotope is Tritium (\(^3_1H\)).
04

Write the nuclear equation for the radioactive decay of Tritium

Tritium undergoes beta decay, in which it emits a beta particle (an electron) and turns into Helium-3. The nuclear equation for the radioactive decay of Tritium is: \[ ^3_1H \rightarrow ^3_2He + ^0_{-1}e \] Here, \(^3_1H\) represents Tritium, \(^3_2He\) represents Helium-3, and \(^0_{-1}e\) represents the emitted beta particle (electron).

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Most popular questions from this chapter

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