Question

Be sure to answer all parts.

(a) Select the electron configuration of the cyanide ion (CN)−.
[He2] (σ2s)2(σ*2s)2(σ2px)2(π2py)2(π2pz)2
THIS ONE IS CORRECT- [He2] (σ2s)2(σ*2s)2(π2py)2(π2pz)2(σ2px)2
[He2] (σ2s)2(σ*2s)2(π2py)2(π2px)2(σ2pz)2

(b) Select a stable molecule that is isoelectronic with the ion.
NO
THIS ONE IS CORRECT- CO
CO2

Answer 1

The cyanide ion (CN)− has an electron configuration of [He] (2σ2s)²(2σ*2s)²(2π2py)²(2π2pz)²(2σ2px)², and carbon monoxide (CO) is a stable molecule isoelectronic with the cyanide ion.

Step-by-step explanation:

The correct electron configuration of the cyanide ion (CN)− is [He] (2σ2s)²(2σ*2s)²(2π2py)²(2π2pz)²(2σ2px)².

A stable molecule that is isoelectronic with the cyanide ion is carbon monoxide (CO).

This question involves predicting electron configurations and identifying isoelectronic species, which is central to the study of chemical bonding and molecular orbitals in inorganic chemistry.