For this question consider a homonuclear diatomic with z as bond axis. Ignore radial nodes. A σ g bonding MO formed from an ns pair has zero nodal planes. In ground-state Be₂ under elementary MO theor

Question

For this question consider a homonuclear diatomic with z as bond axis. Ignore radial nodes. A σ $g$ bonding MO formed from an ns pair has zero nodal planes. In ground-state Be₂ under elementary MO theory, how many OCCUPIED MOs belong to this ns-derived, bonding-gerade, zero-nodal-plane class? Count orbitals, not electrons.

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Answer:

B

Solution:

Be₂ has σ $1 s, g$ ²σ* $1 s, u$ ²σ $2 s, g$ ²σ* $2 s, u$ ². The occupied bonding ns MOs are σ $1 s, g$ and σ $2 s, g$ , giving 2.

TestHub · Accepted Answer

Be₂ has σ 1 s , g ²σ* 1 s , u ²σ 2 s , g ²σ* 2 s , u ². The occupied bonding ns MOs are σ 1 s , g and σ 2 s , g , giving 2.

Chemistry - CHEMICAL BONDING Question with Solution | TestHub

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