The arrangement of d-electrons in the complex with the formula [Cr(H2O)6]3+ can be represented using the diagram on the lesson powerpoint Q3 . Explain with reference to this diagram, why a solution containing this complex is coloured.
Question 2
2.
Exam question - Colour is often used in chemistry to identify substances. Compare and contrast the origin of a copper(II) complex with the colour of the copper (II) ion in a flame test. You do not need to state any specific colours.
Question 3
3.
Question 4
4.
Question 5
5.
Question 6
6.
Predict the likely shape of the complex ion a) [Ag(CN)2]-
Linear
Trigonal Planar
Tetrahedral
Octahedral
Square Planar
Predict the likely shape of the complex ion b) [Fe(CN)6]3-
Linear
Trigonal Planar
Tetrahedral
Octahedral
Square Planar
Predict the likely shape of the complex ion c) [NiCl4]2-
Linear
Trigonal Planar
Tetrahedral
Octahedral
Square Planar
Predict the likely shape of the complex ion d) [CrCl2(H2O)4]+