Edexcel A Level Chemistry:复习笔记6.2.7 Cis-platin
Cis-platin Sometimes, complexes with four coordinate bonds may adopt a square planar geometry instead of a tetrahedral one Cyanide ions (CN-) are the most common ligands to adopt this geomet...
Edexcel A Level Chemistry:复习笔记6.2.6 Tetrahedral Complexes
Tetrahedral Complexes When there are four coordinate bonds the complexes often have a tetrahedral shape Complexes with four chloride ions most commonly adopt this geometry Chloride ligands a...
Edexcel A Level Chemistry:复习笔记6.2.5 Octahedral Complexes
Octahedral Complexes Octahedral complexes are formed when a central metal atom or ion forms six coordinate bonds This could be six coordinate bonds with six small, monodentate ligands Exampl...
普林斯顿更新学费新政，还有哪些美国大学拥有学费优惠政策？
众所周知，美国TOP大学的学费一向“惊人”，对于家庭情况不太优渥的同学来说，更是一个巨大的难题。 根据U.S.News报告数据显示，近20年来，美国私立大学的平均学杂费上涨了144%；公立大学的州外学杂费上涨了171%；...
Edexcel A Level Chemistry:复习笔记6.2.4 Ligands
Monodentate ligands Monodentate ligands can form only one dative bond to the central metal ion This is because they have a single lone pair of electrons to form a dative bond with the metal ...
2022-2023FBLA翰林考点报名中！详细解读14个参赛科目，考察侧重点，哪个科目更易获奖？
FBLA全球未来商业领袖挑战 2022-2023新赛季报名进行中 作为美国三大商赛之一，由美国哥伦比亚大学教授联合美国各商学院发起的FBLA是极具含金量的商科学术挑战，也是美国中学校长联合会(NASSP)每年官方推荐的学...
Edexcel A Level Chemistry:复习笔记6.2.3 Coloured Ions
Coloured Ions Perception of colour Most transition metal compounds appear coloured. This is because they absorb energy corresponding to certain parts of the visible electromagnetic spectrum ...
epq项目题目选题来了！不同方向EPQ选题供你参考
已经下定决心做一个EPQ项目，却呆坐在一个空白的电脑屏幕前，不知从何入手... ...这是不是你？EPQ的全称是Extended Project Qualification，是A-Level课程以外的独立研究项目，涉及到大量写作、计划和自我激励。e...
Edexcel A Level Chemistry:复习笔记6.2.2 Transition Metal Complexes
Transition Metal Complexes Transition element ions can form complexes which consist of a central metal ion and ligands A ligand is a molecule or ion that forms a co-ordinate bond with a tran...
Edexcel A Level Chemistry:复习笔记6.2.1 Transition Metals
General Properties of Transition Metals Transition metals are elements with an incomplete d-subshell that can form at least one stable ion with an incomplete d-subshell This definition disti...
Edexcel A Level Chemistry:复习笔记6.1.9 Redox Titration Calculations
Redox Titration Calculations Redox Titrations In a titration, the concentration of a solution is determined by titrating with a solution of known concentration. In redox titrations, an oxidi...
Edexcel A Level Chemistry:复习笔记6.1.8 Fuel Cells
Fuel Cells A fuel cell is an electrochemical cell in which a fuel donates electrons at one electrode and oxygen gains electrons at the other electrode These cells are becoming more common in...
