Match List I with List II
List I (Oxide)   List II (Type of bond)
A. N$$_2$$O$$_4$$              I. 1 N=O bond
B. NO$$_2$$                II. 1 N-O-N bond
C. N$$_2$$O$$_5$$              III. 1 N-N bond
D. N$$_2$$O                IV. 1 N=N/N$$\equiv$$N bond

Let us analyze the structure of each oxide:

A. N₂O₄: The structure is O₂N-NO₂, where two NO₂ groups are joined by a N-N bond → Match with III

B. NO₂: The structure of NO₂ has one $$N=O$$ double bond and one N-O bond with a lone electron on nitrogen → Match with I (1 N=O bond)

C. N₂O₅: The structure is O₂N-O-NO₂, where two NO₂ groups are connected through an oxygen atom, forming a N-O-N bond → Match with II

D. N₂O: The structure is N=N=O (or N≡N→O), which contains a N=N or N≡N bond → Match with IV

The correct matching is: A-III, B-I, C-II, D-IV.