JEE MAIN - Chemistry (2025 - 24th January Evening Shift - No. 18)
When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour change observed will be:
Pale Blue $\rightarrow$ Blue $\rightarrow$ Green $\rightarrow$ Violet
Pale Blue $\rightarrow$ Blue $\rightarrow$ Violet $\rightarrow$ Green
Green $\rightarrow$ Pale Blue $\rightarrow$ Blue $\rightarrow$ Violet
Violet $\rightarrow$ Blue $\rightarrow$ Pale Blue $\rightarrow$ Green
Explanation
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