Aluminate ion is a:
1) Positive radical
2) Negative radical
3) Negative element
4) Positive element
Answer (2)
The aluminate ion (AlO₃²⁻) is a negatively charged species, classified as a negative radical. It forms from aluminum and is utilized in various applications such as water purification and ceramics. Therefore, the correct choice is option 2, Negative radical.
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The aluminate ion refers to a chemical species that contains aluminum combined with oxygen, typically represented as AlO 2 − . In chemistry, ions can be broadly categorized into either positive ions (cations) or negative ions (anions). The aluminate ion, with the chemical formula AlO 2 − , has a negative charge, as indicated by the superscript minus sign.
Reasoning:
What is an aluminate ion? An aluminate ion is a compound composed of aluminum and oxygen. In terms of its charge, it carries one or more negative charges.
Why is the aluminate ion considered a negative radical? The term "radical" in the context of ions often refers to charged species. Aluminate ion's negative charge results from the extra electron it carries, which is not balanced by an equal positive charge (from protons), making it an anion.
What does this mean for chemistry students? Understanding the charge of ions is crucial, as it impacts how these ions interact with others to form compounds. Negative radicals like the aluminate ion will typically bond with positive radicals (cations) to create stable ionic compounds.
Thus, the correct multiple-choice option for "aluminate ion is a ____" is 2) Negative radical .
