{"id":401841,"date":"2023-01-11T11:44:08","date_gmt":"2023-01-11T06:14:08","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/question\/find-the-number-of-inner-orbital-octahedral-complexes-d2sp3hybridization-of-the-following-coh2o63fenh362-cof63-nif62-ptnh34cl2-crh2o6\/"},"modified":"2025-06-19T20:07:03","modified_gmt":"2025-06-19T14:37:03","slug":"find-the-number-of-inner-orbital-octahedral-complexes-d2sp3hybridization-of-the-following-coh2o63fenh362-cof63-nif62-ptnh34cl2-crh2o6","status":"publish","type":"questions","link":"https:\/\/infinitylearn.com\/surge\/question\/chemistry\/find-the-number-of-inner-orbital-octahedral-complexesd2s\/","title":{"rendered":"Find the number of inner\u00a0–\u00a0orbital octahedral complexes\u00a0(d2sp3hybridization)\u00a0of the following.[Co(H2O)6]3+,[Fe(NH3)6]2+,\u00a0[CoF6]3-,\u00a0[NiF6]2-,[Pt(NH3)4]Cl2,\u00a0[Cr(H2O)6]3+,\u00a0[Mn(CN)6]4-,[Fe(CN)6]3-,Co(NH3)62+"},"content":{"rendered":"","protected":false},"author":1,"template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"Find the number of inner\u00a0-\u00a0orbital octahedral complexes\u00a0(d2sp3hybridization)\u00a0of the following.[Co(H2O)6]3+,[Fe(NH3)6]2+,\u00a0[CoF6]3-,\u00a0[NiF6]2-,[Pt(NH3)4]Cl2,\u00a0[Cr(H2O)6]3+,\u00a0[Mn(CN)6]4-,[Fe(CN)6]3-,Co(NH3)62+","custom_permalink":"question\/chemistry\/find-the-number-of-inner-orbital-octahedral-complexesd2s\/"},"categories":[],"acf":{"question":"

Find the number of inner -<\/mo><\/math> orbital octahedral complexes (<\/mo>d<\/mi>2<\/mn><\/msup>sp<\/mi>3<\/mn><\/msup>hybridization<\/mi>)<\/mo><\/math> of the following.<\/p>

[<\/mo>Co<\/mi>(<\/mo>H<\/mi>2<\/mn><\/msub>O<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>3<\/mn>+<\/mo><\/mrow><\/msup>,<\/mo>[<\/mo>Fe<\/mi>(<\/mo>NH<\/mi>3<\/mn><\/msub>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>2<\/mn>+<\/mo><\/mrow><\/msup>,<\/mo> <\/mo>[<\/mo>CoF<\/mi>6<\/mn><\/msub>]<\/mo><\/mrow>3<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo> <\/mo>[<\/mo>NiF<\/mi>6<\/mn><\/msub>]<\/mo><\/mrow>2<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo>[<\/mo>Pt<\/mi>(<\/mo>NH<\/mi>3<\/mn><\/msub>)<\/mo><\/mrow>4<\/mn><\/msub>]<\/mo>Cl<\/mi>2<\/mn><\/msub>,<\/mo> <\/mspace>[<\/mo>Cr<\/mi>(<\/mo>H<\/mi>2<\/mn><\/msub>O<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>3<\/mn>+<\/mo><\/mrow><\/msup>,<\/mo> <\/mo>[<\/mo>Mn<\/mi>(<\/mo>CN<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>4<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo>[<\/mo>Fe<\/mi>(<\/mo>CN<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>3<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo>Co<\/mi>(<\/mo>NH<\/mi>3<\/mn><\/msub>)<\/mo><\/mrow>6<\/mn><\/msub><\/mrow><\/mfenced>2<\/mn>+<\/mo><\/mrow><\/msup><\/math><\/p>","options":null,"solution":"

Water is a moderately weak ligand and in case of Co3+<\/sup>, water acts as strong ligand. So, pairing of 3d-electrons takes place and Co<\/mi>(<\/mo>H<\/mi>2<\/mn><\/msub>O<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub><\/mrow><\/mfenced>3<\/mn>+<\/mo><\/mrow><\/msup><\/math>complex becomes an inner-orbital complex.<\/p>

In NiF<\/mi>6<\/mn><\/msub><\/mfenced>2<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo><\/math> Ni is in +4 oxidation state. Although Fluoride ion is a weak ligand but due to high oxidation state of Ni, pairing of electrons takes place. Therefore, it is an inner orbital complex.<\/p>

In Pt<\/mi>NH<\/mi>3<\/mn><\/msub><\/mfenced>4<\/mn><\/msub><\/mrow><\/mfenced>Cl<\/mi>2<\/mn><\/msub>,<\/mo><\/math> Pt is present in +2 oxidation state. Due to presence of NH3<\/sub>, pairing of electrons takes place and becomes an inner orbital complex.<\/p>

Water is a moderately weak ligand and in case of Cr<\/mi>(<\/mo>H<\/mi>2<\/mn><\/msub>O<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub><\/mrow><\/mfenced>3<\/mn>+<\/mo><\/mrow><\/msup><\/math>, water acts as strong ligand. So, pairing of 3d-electrons takes place and complex becomes an inner-orbital complex.<\/p>

Mn<\/mi>CN<\/mi><\/mfenced>6<\/mn><\/msub><\/mrow><\/mfenced>4<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo> <\/mo>Fe<\/mi>CN<\/mi><\/mfenced>6<\/mn><\/msub><\/mrow><\/mfenced>3<\/mn>-<\/mo><\/mrow><\/msup>,<\/mo> <\/mo>Co<\/mi>NH<\/mi>3<\/mn><\/msub><\/mfenced>6<\/mn><\/msub><\/mrow><\/mfenced>2<\/mn>+<\/mo><\/mrow><\/msup><\/math> are also inner-orbital complexes because of the presence of strong ligands.<\/p>

Complex that are inner orbital complexes:<\/p>

[<\/mo>Co<\/mi>(<\/mo>H<\/mi>2<\/mn><\/msub>O<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>3<\/mn>+<\/mo><\/mrow><\/msup> <\/mo>,<\/mo> <\/mo>[<\/mo>NiF<\/mi>6<\/mn><\/msub>]<\/mo><\/mrow>2<\/mn>-<\/mo><\/mrow><\/msup> <\/mo>,<\/mo> <\/mo>[<\/mo>Pt<\/mi>(<\/mo>NH<\/mi>3<\/mn><\/msub>)<\/mo><\/mrow>4<\/mn><\/msub>]<\/mo>Cl<\/mi>2<\/mn><\/msub> <\/mo>,<\/mo>[<\/mo>Cr<\/mi>(<\/mo>H<\/mi>2<\/mn><\/msub>O<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>3<\/mn>+<\/mo><\/mrow><\/msup> <\/mo>,<\/mo> <\/mo>[<\/mo>Mn<\/mi>(<\/mo>CN<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>4<\/mn>-<\/mo><\/mrow><\/msup> <\/mo>,<\/mo> <\/mspace> <\/mo>[<\/mo>Fe<\/mi>(<\/mo>CN<\/mi>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>3<\/mn>-<\/mo><\/mrow><\/msup> <\/mo>,<\/mo> <\/mo>[<\/mo>Co<\/mi>(<\/mo>NH<\/mi>3<\/mn><\/msub>)<\/mo><\/mrow>6<\/mn><\/msub>]<\/mo>2<\/mn>+<\/mo><\/mrow><\/msup><\/math><\/p>","subject":""},"yoast_head":"\nFind the number of inner\u00a0-\u00a0orbital octahedral complexes\u00a0(d2sp3hybridization)\u00a0of the following.[Co(H2O)6]3+,[Fe(NH3)6]2+,\u00a0[CoF6]3-,\u00a0[NiF6]2-,[Pt(NH3)4]Cl2,\u00a0[Cr(H2O)6]3+,\u00a0[Mn(CN)6]4-,[Fe(CN)6]3-,Co(NH3)62+ - 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