The magnetic properties of NO(2) and N(2...

The magnetic properties of `NO_(2) and N_(2)O_(4)` are different. Why?

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`NO_(2)` molecule has unpaired electron. Hence it is paramagnetic and reactive. NO, dimerises to give `N_(2)O_(4)`.
`N_(2)O_(4)` molecule has no unpaired electrons. Hence it is diamagnetic

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