Match the following List - I (aquated ion) List - II (colour) A) {Ni}²+} I) violet B) {Fe}³+} II) blue C) {Mn}³+} III) yellow D) {V}^{4+} IV) red V) green Correct answer is [AP EAPCET 21 May 2025 S2]

Correct Answer is : A-V, B-III, C-I, D-II \; {A-V, B-III, C-I, D-II} \;A-V, B-III, C-I, D-II

Correct Answer is : A-V, B-III, C-I, D-II \; {A-V, B-III, C-I, D-II} \;A-V, B-III, C-I, D-II

Test Index

D and F Block Elements

Section: Chemistry

Question : 5 of 10

Marks: +1, -0

Match the following

Solution:

Let's determine the color of each aquated ion:

(A)

\mathrm{Ni}^{2+}

In aqueous solution:

[\mathrm{Ni}(\mathrm{H}_2\mathrm{O})_6]^{2+}

This complex is green in color.

(A) \rightarrow (V)

Green

(B)

\mathrm{Fe}^{3+}

In aqueous solution:

[\mathrm{Fe}(\mathrm{H}_2\mathrm{O})_6]^{3+}

This complex is yellow to brownish-yellow.

(B) \rightarrow (III)

Yellow

(C)

\mathrm{Mn}^{3+}

In aqueous solution:

[\mathrm{Mn}(\mathrm{H}_2\mathrm{O})_6]^{3+}

This complex is violet or red-purple.

(C) \rightarrow (I)

Violet

(D)

\mathrm{V}^{4+}

In aqueous solution:

[\mathrm{VO}]^{2+}

(vanadyl ion)

This species is blue.

(D)

\rightarrow

(II) Blue

Final Matching:

\text{A-V, \; \; B-I I I, \; \; C-I, \; \; D-I I}

Correct Option: D

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