What is one way in which Noble Gases are different from other elements?
a. Noble Gases have low boiling points
b. Noble gases have high melting points
c. Noble gases have extremely high densities
d. Noble gases have unusually high atomic masses
Also, what is a 'valence energy level"?
All I know about noble gases is that they don't have any unpaired electrons in their 'valence energy levels', and that they are inert and do not react to form compounts.
You are right. The have complete octets in their valence shell and they don't form very many compounds.
I think of the choices, none which are really good, I would pick A.
You know d can't be true since He has a molar mass of 4 and that isn't unusually high. You know c can't be right since He is a very low density. You know b can't be right since all of them are gases. That leaves only A which isn't a great answer because low is a relative term; i.e., just how low is low. But A is the best choice there.
To determine the answer to the question about how Noble Gases are different from other elements, we need to look at the given options - a, b, c, and d. Let's go through each option and explain how to find the correct answer.
a. Noble Gases have low boiling points: To determine whether this statement is true, you can look up the boiling points of some Noble Gases, such as helium, neon, or argon. Compare these values with the boiling points of other elements, and if you find that Noble Gases generally have lower boiling points than most other elements, you can conclude that this statement is correct.
b. Noble gases have high melting points: Similarly to option a, you can look up the melting points of Noble Gases and compare them to other elements. If Noble Gases tend to have higher melting points than most elements, then this statement is correct.
c. Noble gases have extremely high densities: Once again, you can research the densities of Noble Gases and compare them to other elements. If Noble Gases have significantly higher densities than most elements, then this statement is correct.
d. Noble gases have unusually high atomic masses: To check if this statement is accurate, you can compare the atomic masses of Noble Gases with those of other elements. If Noble Gases generally have higher atomic masses than most other elements, then this statement is correct.
Now, let's clarify what a "valence energy level" is. In an atom, electrons are arranged in energy levels or shells. The valence energy level refers to the outermost energy level of an atom. The valence electrons are the electrons in this outermost energy level, often called the valence shell. These valence electrons play a crucial role in determining an atom's chemical properties and how it interacts with other atoms in forming compounds.
Regarding your comment on Noble Gases, you are correct. Noble Gases have a fully filled valence energy level, meaning their valence shells are complete with the maximum number of electrons they can hold. Because of this electron configuration, Noble Gases are chemically stable and do not easily form compounds.