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Which of the following polyatomic ions contains a halogen?
- A Ammonium (NH₄⁺)
- B Cyanide (CN⁻)
- C Sulfate (SO₄²⁻)
- D Perchlorate (ClO₄⁻)
That's Correct!
It's Wrong!
Perchlorate is the most oxygen-rich oxyanion of chlorine, comprising one chlorine atom bonded to four oxygen atoms. This ion is a strong oxidizing agent, widely used in rocket propellants, fireworks, and explosives. However, perchlorate is also an environmental contaminant that poses risks to human health, particularly regarding thyroid function, as it can inhibit the uptake of iodide necessary for thyroid hormone production.
