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Question:
The colourless gas that turns brown in air is
The colourless gas that turns brown in air is
Updated On: Jun 6, 2024
- $ NO $
- $ NO_{2}$
- $N_{2}O_{4}$
- $N_{2}O_{5}$
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The Correct Option is A
Solution and Explanation
Nitric oxide, $NO$, a colourless gas, when comes in contact of air, turns brown due to its oxidation into $NO _{2}$ (which is brown in colour).
$\underset{\text { colourless }}{2 NO }+\underset{\text { (fromair) }}{ O _{2}} \rightarrow \underset{\text { brown }}{2 NO _{2}}$
$\underset{\text { colourless }}{2 NO }+\underset{\text { (fromair) }}{ O _{2}} \rightarrow \underset{\text { brown }}{2 NO _{2}}$
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Concepts Used:
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Group 15 elements are also known as nitrogen group elements or nitrogen family.
It consists of:
- Nitrogen (N)
- Phosphorus (P)
- Arsenic (As)
- Antimony (Sb)
- Bismuth (Bi)
- Moscovium (Mc)
They are present on the right side of the periodic table. All the elements are arranged based on their atomic weight. The elements with similar properties reside in a column called the group.
All Group 15 elements have the electron configuration ns2np3 in their outer shell, where n is the principal quantum number.
Periodic Trends in Group 15 Elements
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