Ligand Exchange Ligand exchange?(or?ligand?substitution) is when one?ligand?in a complex is replaced by another Ligand exchange forms a new complex that is?more stable?than the original one The lig...
Coloured Compounds & Electron Promotion Most transition element complexes are?coloured A transition element complex solution which is coloured,?absorbs?part of the electromagnetic spectrum in t...
Define Degenerate & non-Degenerate d Orbitals There are?five d orbitals?in an?isolated?transition element atom or ion An isolated transition element is one that is not bonded to anything else T...
CAIE劍橋國際考評部已經(jīng)于2022年8月11日公布了今年夏季Alevel大考成績。已經(jīng)查到成績的同學(xué)們都考得怎么樣呢？都考到了目標(biāo)分?jǐn)?shù)了嗎？ 雖然今年國內(nèi)部分地區(qū)因為疫情采用了POE的評分方式，但大部分同學(xué)還是參加了...
Geometry of the Transition Element Complexes Depending on the?size of the ligands?and the?number of dative bonds?to the central metal ion, transition element complexes have different geometries Dat...
Define Complex A?complex?is a molecule or ion formed by a?central metal atom?or ion?surrounded by one or more?ligands A ligand is a species that contains one or more?lone pairs of electrons The lig...
Define Ligand A?ligand?is a molecule or ion that has?one?or?more?lone pairs of electrons These lone pairs of electrons are donated by the ligand, to form?dative covalent bonds?to a central metal at...
Transition Elements: Ligands & Complex Formation Transition element ions can form complexes which consist of a?central metal ion?and?ligands Copper(II) and cobalt(II) ions will be used as examp...
Effects of the 3d & 4s Subshells on Oxidation States of the Transition Elements Transition elements can have?variable oxidation states These variable oxidation states can be formed as the 3d an...
Define Transition Element Transition elements?are d-block elements which form?one?or?more?stable?ions?with an?incomplete d subshell They are all metals found in the d-block of the Periodic Table, b...
Effect of Ionic Radius on Thermal Stability of Group 2 Nitrates & Carbonates The Group 2 nitrates and carbonates become?more thermally stable?going down the group The?charge density?of the cati...
Homogeneous & Heterogeneous Catalysis Catalysts?increase the rate of reaction by providing an alternative pathway which has a lower?activation energy Catalysts can be either?homogeneous?or?hete...
