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Chapter 2: Problem 1

How many isotopes of magnesium occur naturally on Earth?

Short Answer

Expert verified
There are three isotopes of magnesium that occur naturally on Earth.

Step by step solution

01

Understand what an isotope is

An isotope of any element consists of atoms that have the same number of protons, but variable numbers of neutrons. This means they are the same element, but can have different atomic masses.
02

Look up magnesium isotopes

Next, using a credible reference, look up isotopes of magnesium. It is important to only count those isotopes that are stated to occur naturally.
03

Count the isotopes

Upon researching, you will find that there are three isotopes of magnesium that occur naturally. These are magnesium-24 (roughly 79% abundance), magnesium-25 (roughly 10% abundance), and magnesium-26 (roughly 11% abundance).

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Most popular questions from this chapter

Which has more atoms: \(1.008 \mathrm{~g}\) of hydrogen or \(39.95 \mathrm{~g}\) of argon?

Why have scientists chosen to give the number \(6.022 \times 10^{23}\) a name?

What is the mass (in amu) of \(100^{12} \mathrm{C}\) atoms? Of \(100{ }^{13} \mathrm{C}\) atoms?

Give two interpretations of the number "12.011" found below the symbol for carbon on the periodic table.

Examine the periodic table and find the symbol for magnesium. a) How does the number given just below the symbol for magnesium (rounded to \(0.01\) ) compare with the average mass (amu) of one magnesium atom? b) How does the number given just below the symbol for magnesium (rounded to 0.01) compare with the mass (grams) of \(6.022 \times 10^{23}\) magnesium atoms?
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