The carbon atoms in ethylene undergo sp2 hybridization, resulting in a planar structure.

The central sulfur atom in SF6 undergoes sp3d2 hybridization.

[Fe(CN)6]3- exhibits d2sp3 hybridization due to the octahedral arrangement of ligands.

In [Ni(CN)4]2-, nickel has a coordination number of 4 and uses dsp2 hybridization.

[Ni(CO)4] has a tetrahedral geometry, which corresponds to sp3 hybridization.

[Ni(CN)4]2- has a square planar geometry, which corresponds to dsp2 hybridization.

The tertiary structure of proteins is stabilized by a combination of hydrophobic interactions, ionic interactions, hydrogen bonds, and sometimes covalent bonds.

The tertiary structure of proteins is stabilized by a combination of hydrophobic interactions, ionic interactions, hydrogen bonds, and sometimes covalent bonds.

H2O exhibits hydrogen bonding due to the presence of hydrogen atoms bonded to highly electronegative oxygen.

Water exhibits hydrogen bonding due to the presence of O-H bonds.

1-butanol and 2-butanol differ in the position of the hydroxyl group, hence they are structural isomers.

Alkenes exhibit geometric isomerism due to restricted rotation around the double bond.

Cis-2-butene and trans-2-butene differ in the spatial arrangement of groups around the double bond, which is characteristic of geometric isomerism.

Disubstituted benzene derivatives can exhibit geometric isomerism due to the restricted rotation around the carbon-carbon bonds.

1,2-dichloroethane can exist in different structural forms, thus showing structural isomerism.

1-bromobutane and 2-bromobutane are structural isomers as they differ in the position of the bromine atom.

1-butanol and 2-butanol differ in the position of the hydroxyl group, hence they are structural isomers.

1-Butene and 2-Butene are structural isomers as they differ in the position of the double bond.

1-butyne and 2-butyne are structural isomers as they differ in the position of the triple bond.

Alkenes exhibit geometric isomerism due to the restricted rotation around the double bond.

Butanol can exist in different structural forms (1-butanol and 2-butanol), which is a case of structural isomerism.

Butanol and isobutanol are structural isomers as they have the same molecular formula but different structures.

Butene exhibits geometric isomerism (cis-trans isomerism) due to the presence of a double bond.

Butene exhibits geometric isomerism due to the restricted rotation around the double bond.

Structural isomerism occurs when compounds have the same molecular formula but different arrangements of atoms.

Secondary amines can exhibit structural isomerism due to different alkyl groups attached to the nitrogen.

[Co(en)3]Cl3 shows optical isomerism because it has chiral centers due to the bidentate ligand ethylenediamine (en).

Geometric isomerism occurs due to different arrangements of ligands around the central metal ion.

[Co(en)3]3+ exhibits optical isomerism because it has chiral centers due to the bidentate ligand ethylenediamine (en).

[Cr(en)3]3+ shows optical isomerism because it has chiral centers due to the bidentate nature of the ethylenediamine (en) ligands.