According to molecular orbital theory,the bond order of He-He in the He₂ molecule is ________.

Question

Quizplus · Accepted Answer

The bond order in molecular orbital theory is calculated as (number of electrons in bonding orbitals - number of electrons in antibonding orbitals)/2. For He2, each helium atom contributes 2 electrons, for a total of 4 electrons. These fill the 1s bonding orbital (2 electrons) and the 1s* antibonding orbital (2 electrons). Thus, the bond order is (2-2)/2 = 0, indicating no bond between the two helium atoms.

According to Molecular Orbital Theory,the Bond Order of He-He in the He2

According to Molecular Orbital Theory,the Bond Order of He-He in the He₂