Two Well-Known Complex Ions Containing Ni Are [Ni(H₂O)₆]²⁺, Which Is

question 28

Multiple Choice

Two well-known complex ions containing Ni are [Ni(H₂O) ₆]²⁺, which is green, and [Ni(en) ₃]²⁺, which is purple. Which one of these statements is true?

• A) The crystal field splitting energy (Δ) is greater for [Ni(en)₃]²⁺ than for [Ni(H₂O)₆]²⁺.
• B) [Ni(en)₃]²⁺ absorbs energy in the red region of the spectrum.
• C) Both complex ions are diamagnetic.
• D) [Ni(H₂O)₆]²⁺ transmits light with wavelengths of approximately 650-700 nm.
• E) The green complex absorbs green light.

---

Definitions:

Robert Sternberg

An American psychologist known for his theory on love and intelligence, including the Triarchic Theory of Intelligence.

Peter Wason

A British psychologist known for his work in the field of cognitive psychology, particularly for his research on reasoning and decision-making.

Wolfgang Köhler

A psychologist and a key figure in the development of Gestalt psychology, noted for his work on insight learning.

Intrinsic Motivation

Motivation driven by an interest or enjoyment in the task itself, rather than by external pressures or rewards.