Question

missed this? watch iwe: determining whether a molecule
part a
which bond is polar?
a bond between c and o
a bond between n and n
a bond between c and s
a bond between n and cl
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Explanation:

A polar bond occurs when there is a significant difference in electronegativity between the two atoms forming the bond.

• For the bond between \(C\) (electronegativity \(2.5\)) and \(O\) (electronegativity \(3.5\)), the electronegativity difference \(\Delta \chi=3.5 - 2.5=1.0\).
• For the bond between \(N\) (electronegativity \(3.0\)) and \(N\), \(\Delta \chi = 3.0-3.0 = 0\) (non - polar as it is a bond between two identical atoms).
• For the bond between \(C\) (electronegativity \(2.5\)) and \(S\) (electronegativity \(2.5\)), \(\Delta \chi=2.5 - 2.5 = 0\) (non - polar).
• For the bond between \(N\) (electronegativity \(3.0\)) and \(Cl\) (electronegativity \(3.0\)), \(\Delta \chi=3.0 - 3.0=0\) (non - polar).

Answer:

A bond between \(C\) and \(O\)