Cr3+ octahedral void: 0,5 bp normal spinel (FeTCrOCrOO4): LFSE = 0,266 +2∙1,2 =2,666 0,5 bp Δ0 Δ0 Δ0 inverse spinel (FeOCrTCrOO4): LFSE = 0,4Δ0 + 0,356 +1,2 =1,956 0,5 bp Δ0 Δ0 Δ0 attains normal spinel configuration 0,5 bp total max. 4,5bp
Cr3+ octahedral void: 0,5 bp normal spinel (FeTCrOCrOO4): LFSE = 0,266 Δ0 +2∙1,2 Δ0 =2,666 Δ0 0,5 bp inverse spinel (FeOCrTCrOO4): LFSE = 0,4Δ0 + 0,356 Δ0 +1,2 Δ0 =1,956 Δ0 0,5 bp attains normal spinel configuration 0,5 bp total max. 4,5bp
2018-National-Competition-Tasks-Theoretical-Solutions.docx