CIE A Level Chemistry復(fù)習(xí)筆記6.3.3 Redox Systems
Redox Systems: Ferrous & Permanganate The oxidation states of transition element ions can change during?redox reactions A species will either be oxidised or reduced, depending on what reaction ...
CIE A Level Chemistry復(fù)習(xí)筆記6.3.2 Predicting Feasibility of Redox Reactions
Feasibility of Redox Reactions Using Standard Electrode Values Transition elements can form ions with various oxidation states The change in their oxidation states involves the?transfer?of electron...
CIE A Level Chemistry復(fù)習(xí)筆記6.3.1 Ligand Exchange
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...
CIE A Level Chemistry復(fù)習(xí)筆記6.2.8 Coloured Complexes
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...
CIE A Level Chemistry復(fù)習(xí)筆記6.2.7 Degenerate & non-Degenerate d Orbitals
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 A-Level成績放榜，各科目分?jǐn)?shù)線已出！
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?yàn)橐咔椴捎昧薖OE的評分方式，但大部分同學(xué)還是參加了...
CIE A Level Chemistry復(fù)習(xí)筆記6.2.6 Geometry of Complexes
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...
CIE A Level Chemistry復(fù)習(xí)筆記6.2.5 Defining Complexes
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...
CIE A Level Chemistry復(fù)習(xí)筆記6.2.4 Ligands
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...
