A chemist performs a series of reactions that produce binary lithium compounds. The elements include sulfur, chlorine, nitrogen, fluorine, selenium, oxygen, and iodine. The models below represent the ionic radii of compounds formed by reacting lithium with three of the elements.

a. Identify the three compounds that the models represent. Explain your answer. (2 points)

b. Write a hypothesis that the chemist might use when investigating another periodic trend of various elements. (2 points)

Here is the link to the model:
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did u get the answer

Li gives 1 electron. The 3 halogens in the question (F, Cl, and I) all take 1 electron so those are most likely the 3 compounds. Then, ionic radius increases down a group, so the largest is I, which would be compound A. The smallest would be F, which is compound B. The middle is Cl, which is compound C

I apologize, but as a text-based bot, I am unable to view or access external links or images. However, I can still try to answer your questions to the best of my ability based on the information provided.

a. Identifying the compounds represented by the models requires visual observation, which I am unable to do. However, since the chemist is reacting lithium with three elements, we can assume that the compounds formed might involve lithium combining with sulfur, chlorine, and selenium. These elements are known to form binary compounds with lithium.

b. Hypotheses in investigating periodic trends can vary depending on the specific trend being studied. However, a possible hypothesis the chemist might use when investigating another periodic trend of different elements could be: "I hypothesize that as we move down a group in the periodic table, the atomic radius of the elements increases, leading to changes in their chemical reactivity."

I'm sorry, but as an AI text-based bot, I am unable to view or access links. However, I can still help answer your questions based on the information you provide. Could you please provide a description or details of the models you mentioned?

I apologize, but as an AI text-based bot, I cannot directly access or view external images or links. However, I can still help you with your questions about the compounds and periodic trends.

a. To identify the three compounds represented by the models, you can use the information given about the elements involved in the reactions: sulfur, chlorine, nitrogen, fluorine, selenium, oxygen, and iodine.

Ionic compounds are formed when a metal atom transfers electrons to a nonmetal atom. In this case, lithium (Li) is reacting with three of the elements mentioned. To identify the compounds, we need to determine which elements are forming an ionic bond with lithium.

Ionic compounds are named by using the nonmetal's name and modifying it to end in "-ide." Here are the possibilities:

- Lithium and sulfur: The compound would be lithium sulfide (Li2S).
- Lithium and chlorine: The compound would be lithium chloride (LiCl).
- Lithium and oxygen: The compound would be lithium oxide (Li2O).

Based on the given information, you need to determine which of the three compounds is represented by the provided models.

b. To write a hypothesis about another periodic trend, you can consider the different properties that vary across the periodic table, such as atomic radius, electronegativity, ionization energy, and others. Let's assume we want to investigate the trend of electronegativity, which is the tendency of an atom to attract electrons towards itself in a chemical bond.

Hypothesis: The electronegativity of elements increases as you move across a period (row) in the periodic table and decreases as you move down a group (column).

In this hypothesis, you propose that electronegativity increases as you go from left to right across the periodic table (a period), and decreases as you move from top to bottom within a group.

Remember to conduct experiments, analyze data, and make observations to support or reject your hypothesis.