Colour in Transition Metal Ions Most transition element complexes are coloured The transition metal ions can be identified by their colour The large variety of coloured compounds is a defini...
Shapes of Complex Ions Depending on the size of the ligands and the number of dative bonds to the central metal ion, transition element complexes have different geometries Dative bonds can a...
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 ...
Oxides Reacting with Water Structure, bonding & electronegativity of the Period 3 elements table The oxides of Na and Mg which show purely ionic bonding produce alkaline solutions...
Melting Point Trend The melting points of the oxides vary significantly across Period 3 and show a clear trend Melting point is a clear indication of the forces of attraction which exist bet...
Reaction with Oxygen Oxide Formation The period 3 elements, excluding chlorine and argon, combine with oxygen to form oxides The oxide formed will contain the elements in their highest oxida...
想要学习AP的同学们容易被传言的AP要求的高综合能力和各个学科的难度劝退。但是其实对于想要冲击藤校等美国顶级院校的学生，AP始终是你的不二选择。根据美国大学理事会发布的研究显示，2003年至今，选择AP的学生...
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A-Level经济学Economics是A-Level最受学生欢迎的科目之一，但是很多学生认为A-Level经济学的学习难度较大、高分率低，“不选不行，选了痛苦”成为了很多选择A-Level经济学学生的写照。 A-Level经济学主要学习内容 ...
