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What colour does the compound dinitrogen trioxide appear in its liquid state?

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in Chemistry – Class 12 by (188k points)
What colour does the compound dinitrogen trioxide appear in its liquid state?

(a) It is colourless

(b) Blue

(c) Green

(d) Yellow

This question was posed to me in my homework.

I'm obligated to ask this question of P-Block Elements in division P-Block Elements of Chemistry – Class 12

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The correct answer is (b) Blue

The best I can explain: Dinitrogen trioxide (N2O3) is found to be blue in colour in both its liquid and solid state. The blue colouration tends to appear because dinitrogen trioxide is a radical pair of nitric oxide and nitrogen dioxide that tend to absorb strongly in the visible region to appear bright blue.

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