Chemistry Post Graduate Teacher Interview Questions and Answers

Inter halogen compounds are compounds formed by the combination of two different halogens.

• Inter halogen compounds are formed when two different halogens combine together.

• These compounds are typically more reactive than individual halogens.

• Examples include ClF3 (Chlorine trifluoride) and BrF5 (Bromine pentafluoride).

An element is a substance made up of atoms with the same number of protons in their nucleus.

• An element is a pure substance that cannot be broken down into simpler substances by chemical reactions.

• Each element is represented by a unique chemical symbol, such as H for hydrogen or O for oxygen.

• Elements are organized in the periodic table based on their atomic number and properties.

• There are currently 118 known elements, with hydrogen being the lightest and uranium being the heav...read more

Catenation is the ability of an element to form bonds with other atoms of the same element to form long chains or rings.

• Catenation is a unique property of carbon, allowing it to form long chains and rings in organic compounds.

• This property is also observed in other elements like silicon, sulfur, and phosphorus.

• Catenation plays a crucial role in the diversity and complexity of organic molecules.

A sigma bond is a type of covalent bond where the electron density is concentrated along the internuclear axis.

• Sigma bonds are formed by the head-on overlap of atomic orbitals.

• They are the strongest type of covalent bond.

• Sigma bonds can be found in single bonds between atoms.

• In a sigma bond, the electron density is highest along the axis connecting the two atomic nuclei.