Question

how to count sigma and pi bonds in any compound?
please give short trick about it..

Answer 1

sigma bond joins side by side
pi bond joins parallel
or
overlapping of orbitals the orbitals merged to form cylindrical symmetrical region on the bond is called sigma bond

by lateral overlap of P orbitals Above and below the axis is called by Bond

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Answer 2

First draw a structure of the element. And see the bonds between each atoms.

If 2 atoms are joined by single bond, it is sigma bond.
If 2 atoms are joined by double bond, there is 1 sigma and 1 pi bond.
If 2 atoms are joined by triple bond, there is 1 sigma and 2 pi bonds.

Calculate all sigma and pi bonds between each pair of atoms and add to get the total no of sigma and pi bonds.

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