See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Molecular orbital configuration for up to 14 electrons    * * * σ < σ < σ < σ < < < σ < 1s 1s 2s 2s 2px 2py 2pz 2px *  * = < 2py 2pz For more than 14 electrons 2py     * * * σ < σ < σ < σ < σ < 1s 1s 2s 2s 2pz 2px 2px Number Species Total number No. of electrons in No. of electrons Bond order (i) + O2 15 10 5