Which of the following is a Hard acid? A) Cu⁺ B) Pd²⁺ C) Cr³⁺ D) Ag⁺ E) Hg²⁺

Name: Which of the following is a Hard acid? A) Cu + B) Pd 2+ C) Cr 3+ D) Ag + E) Hg 2+
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Hard acids are characterized by small size, high charge density, and low polarizability. Among the given choices, Cr has the highest charge density and the smallest size, making it the best option for a hard acid.

Which of the Following Is a Hard Acid