IB Question 5

IB Question 5 - 4 2−[Fe(H 2 O 6 3 oxidation state 6 2 3(d...

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IB Review Question # 5 Name:David Tsai Here is a sample question on the subject of Periodicity from a previous IB Test. 1. Elements with atomic number 21 to 30 are d-block elements. (a) Identify which of these elements are not considered to be typical transition elements. (1) Scandium and zinc (b) Complex ions consist of a central metal ion surrounded by ligands. Define the term ligand . (2) Ligands are able to form coordinate bonds. (c) Complete the table below to show the oxidation state of the transition element . (3) ion Cr 2 O 7 2– [CuCl
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Unformatted text preview: 4 ] 2− [Fe(H 2 O) 6 ] 3+ oxidation state +6 +2 +3 (d) Identify two transition elements used as catalysts in industrial processes, stating the process in each case. (2) Ni is used to convert alkenes to alkanes. Fe is used in the Faber process. (e) Apart from the formation of complex ions and apart from their use as catalysts, state two other properties of transition elements. (2) They are colored compounds and have varaible oxidation states. (Total 10 marks) MNHS – IB HL Chemistry 1...
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This document was uploaded on 10/22/2010.

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