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Chapter 11: Problem 1

Why do different isotopes of an element have the same chemical properties?

Short Answer

Expert verified
Answer: Different isotopes of an element exhibit the same chemical properties because they have the same number of electrons, particularly the same number of valence electrons, in their atomic structure. Valence electrons are responsible for the chemical behavior of elements during chemical reactions, and since the isotopes have the same electron configuration, their chemical properties remain the same.

Step by step solution

01

Understand isotopes

Isotopes are atoms of an element with the same number of protons in their nuclei (thus having the same atomic number), but different numbers of neutrons. As a result, they have different atomic masses. The chemical properties of an element are primarily determined by the number of electrons in its outermost energy level, called the valence electrons.
02

Compare atomic structures of isotopes

The atomic structure of an isotope consists of a nucleus containing protons and neutrons, surrounded by electrons in energy levels. The number of protons and electrons in an isotope is the same because atoms are electrically neutral. Since isotopes of the same element have the same number of protons, they also have the same number of electrons.
03

Focus on the valence electrons

In chemical reactions, it's the valence electrons that are primarily involved, since they are the ones that can be shared, gained, or lost to create new compounds. Since isotopes of an element have the same number of electrons in the same energy levels, they have the same valence electrons. This is the reason why they exhibit the same chemical properties.
04

Conclusion

Different isotopes of an element have the same chemical properties because they have the same number of electrons in their atomic structure, particularly the same number of valence electrons. These valence electrons are responsible for the chemical behavior of elements during chemical reactions, and since the isotopes have the same electron configuration, their chemical properties remain the same.

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Most popular questions from this chapter

Explain the concept of half-life.

A large number of regular six-sided dice are shaken together in a box, then dumped onto a table. Those showing 1 or 2 are removed, and the process is repeated with the remaining ones. (See Explore It Yourself \(11.1 .)\) Is the half-life of the dice greater than, equal to, or less than one throw?

A mixture of two common isotopes of oxygen, oxygen-16 and oxygen-18, is put in a chamber that is then spun around at a very high speed. It is found that one isotope is more concentrated near the axis of rotation of the chamber and the other is more concentrated near the outer part of the chamber. Why is that, and which isotope is where?

What are fission fragments, and why are they so dangerous?

How can a nucleus of uranium- 235 be induced to fission? Describe what happens to the nucleus.
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