Periodic Table

Catalyst: Catalyst is the substance which does not directly participate in the reaction but present in the reaction and increases or decrease the reaction rate.…

Consider two compounds containing the same ligands attached to the same central metal ion, but the arrangement of ligands in space about the central metal…

Brief concepts of Werner’s theory of coordination compounds Alfred Werner studied the structure of coordination complexes and put forward his ideas in the year 1893…

Alfred Werner (1866-1919) French born Swiss chemist founded the modern theory on coordination compounds. His theory and pioneering experimental work on metal complexes won for…

Valence bond theory, primarily the work of Linus Pauling regarded bonding as characterized by the overlap of atomic or hybrid orbitals of individual atoms. Although…

The postulates of valence bond theory (VB Theory) 1) The central metal atom/ion makes available a number of vacant orbitals equal to its coordination number. 2)…

Geometric isomers are possible for both square planar and octahedral complexes, but not tetrahedral. In a cis-isomer two identical (or) similar groups are adjacent to…

Lanthanides and Actinides both show close resemblance because these involve filling of f-subshells. Both have colored ions, low electronegativity, high re-activity and show magnetic properties.…

Use of lanthanides A pyrophoric alloy which contains cerium, lanthanum and Neodymium; iron; aluminium; calcium, carbon and silicon is used in cigarette lighters, toys, flame…

Extraction of Lanthanides from Monazite sand The method used for extraction of lanthanides from monazite sand consists of the steps which have been shown in…