Question

The interhalogen compound formed from the reaction of bromine with excess of fluorine is a :

• A. hypohalite
• B. halate
• C. perhalate
• D. halite

Answer 1

The Correct Option is B

To understand which interhalogen compound is formed when bromine reacts with excess fluorine, we need to explore the chemistry behind interhalogen compounds.

Interhalogen compounds are molecules formed between two different halogens, and in this case, we are considering the halogens bromine (Br) and fluorine (F). Interhalogens typically have the general formula AB_n, where A and B are different halogens and n can vary depending on the relative sizes and reactivities of the halogens involved.

In the reaction given, bromine (Br) reacts with an excess of fluorine (F). Fluorine is the most electronegative and reactive halogen, so it can form compounds with bromine in which it exceeds the halogen proportion, leading to higher interhalogen compounds like \text{BrF}_3 (bromine trifluoride) or \text{BrF}_5 (bromine pentafluoride).

The term "halate" typically refers to a varying formula depending on the context of interhalogen compounds, and while it may not strictly fit traditional naming conventions, it can be applied to this compound class. Therefore, the interhalogen compound like \text{BrF}_3 or \text{BrF}_5 formed from bromine and excess fluorine is conceptually categorized as a "halate".

Let's evaluate the options:

• Hypohalite – Usually refers to compounds like hypochlorites related to oxygenated halogen compounds, not straightforward interhalogens.
• Halate – As discussed, can refer to the type of structure formed similar to traditional halates in interhalogen reactions.
• Perhalate – Implies an even more oxidized or fluorinated form, which may not fully fit in standard naming for simple interhalogens.
• Halite – This is generally a mineral form (like rock salt) not applicable to gas or liquid phase simple compounds.

Therefore, the best categorization given the context is halate, capturing the nature of the heavily fluorinated interhalogen compound.