Final answer:
The charge of the complex formed by a chromium(III) ion coordinated to three ammonia molecules and three water molecules is 3+.
Explanation:
The charge of the complex formed by a chromium(III) ion coordinated to three ammonia molecules and three water molecules is 3+. In the formula [Cr(H₂O)6]3+, the coordination sphere has a cationic charge of 3+. Each water molecule in the complex is neutral, contributing to the overall 3+ charge of the chromium ion.
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