What is sigma bond and which can be used?
Answers
In chemistry, sigma bonds (σ bonds) are the strongest type of covalent chemical bond. They are formed by head-on overlapping between atomic orbitals. Sigma bonding is most simply defined for diatomic molecules using the language and tools of symmetry groups.
Sigma bonds are when the orbital lobes partially overlap. The unpaired electrons meet in the “common” area of the lobe. This bond is stronger because valence electrons are closest to both nuclei. Pi bond electrons are vertically above the sigma electrons. The nucleus, sigma electrons and pi electrons form a 45–45–90 triangle, with the pi electrons at a 45 degree angle to the nucleus. The pi electrons are sqrt(2) times farther away from the protons in the nucleus. This makes the pi bond weaker (Coulombic forces weaken with distance). These bonds are covalent bonds, with possible ionic characteristics (if it's a polar covalent molecule).
here's the answer.......
the type of chemical bonding that are formed by head on overlapping of atomic orbitals are called Sigma bond....
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