single < double bond < triple bond { bond strength trends}
single bond > double bond > triple bond {bond length trends}
single bond :- single bond is sigma bond and it consists of the
end-to-end overlap of hybrid orbitals. Single bonds between are
longest and weakest.
double bond :- is a sigma bond plus a pi bond. pi bond is the
side-to-side overlap of unhybridized p-orbitals. A double bond
between the same two elements is shorter and stronger.
triple bond is a sigma bond plus two pi bonds. A triple bond
between the same two elements is shortest and strongest.
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