The conversation between human and AI assistant.
Why is [math]\mathrm{Cr}^{6+}[/math] (hexavalent chromium) more toxic than [math]\mathrm{Cr}^{3+}[/math] (trivalent chromium)?
That makes sense. Are there any other differences between the two forms of chromium?
Yes, another difference is that [math]\mathrm{Cr}^{6+}[/math] can easily enter cells through channels called anion channels, while [math]\mathrm{Cr}^{3+}[/math] cannot. This allows [math]\mathrm{Cr}^{6+}[/math] to more easily interact with biological molecules such as DNA and proteins, causing damage.