Valency of no²
Valency of no²
Subject
Topic
Level
Middle School
Grade
7
Lesson Steps:

As oxygen valency is always -2.
Let X is the valency of Nitrogen N
So X+2*(-2)=0
X-4=0
X=4
In NO2 valency of Nitrogen is +4.


Answer:

4


Grade: 7
Level: Middle school
Subject: Chemistry
Topic: Valency

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