I know that when two $\ce{p_z}$ orbitals overlap in a particular direction - along the z axis - they form a sigma bond. Now, if two $\ce{d_{yz}}$ orbitals overlap in same direction, which type of covalent bond would be formed?


1 Answer 1


Before I answer the question, you should understand that - since everything is symmetric - the answer would be the same if we took two $\ce{d_{yz}}$ orbitals along the x-axis, two $\ce{d_{xy}}$ orbitals along the y-axis, etc.

Have a look at this snippet I picked from Wikipedia Commons (by Jeremy77, public domain):

dxy orbitals overlapping laterally along y axis

Here you can see the overlap of two $\ce{d_{xy}}$ orbitals along the y-axis constructively (in the same phase). There are four lobes overlapping, which would lead to a total of two nodal planes. Such a bond is a speciality of $\ce{d}$ orbitals and it is called the delta ($\delta$) bond.

Now, can you understand what the answer to your question would be?

See also: Which d orbitals can form Sigma, Pi, Delta bonds?

  • $\begingroup$ Just tell me in one word what is the answer of this question. $\endgroup$ Jul 1, 2018 at 3:15
  • $\begingroup$ @RohanSachdeva I said in my answer it's the delta bond $\endgroup$ Jul 1, 2018 at 3:23
  • $\begingroup$ Is delta bond resulting when $d_{x^2-y^2}$ and $p_y$ overlap along $y-axis$? $\endgroup$
    – mnulb
    Aug 20, 2018 at 3:39

Not the answer you're looking for? Browse other questions tagged or ask your own question.