Match the items in the three columns. The correct answer is · ABC26IN0127
Subject: Inorganic Chemistry · Chapter: Coordination Chemistry · Topic: Coordination Chemistry – General · Exam: CSIR NET 2017 · Marks: 2 · Difficulty: Medium
Match the items in the three columns.
Complex (column 1)
Color (column 2)
Absorption max $(\lambda_{\mathrm{max}},\ \mathrm{nm})$ (column 3)
A. $[\mathrm{Ni(H_2O)_6}](\mathrm{NO_3})_2$
I. Blue
X. 675
B. $[\mathrm{Ni(NH_3)_6}](\mathrm{NO_3})_2$
II. Green
Y. 565
C. $[\mathrm{Ni(en)_3}](\mathrm{NO_3})_2$
III. Violet
Z. 615
The correct answer is
(a)A-II-X; B-I-Z; C-III-Y
(c)A-III-Y; B-I-Z; C-II-X
(b)A-I-X; B-II-Y; C-III-Z
(d)A-I-X; B-II-Z; C-III-Y
Answer
Answer: A ✓ checked by 4AB · confidence medium
Explanation
Stronger fields shift absorption to shorter λ: [Ni(H₂O)₆]²⁺ is green and absorbs near 675 nm; [Ni(NH₃)₆]²⁺ is blue (615 nm); [Ni(en)₃]²⁺ is violet (565 nm). That is A–II–X, B–I–Z, C–III–Y (a).