Transition Metal Definitions Quiz

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1. The reaction of copper(II) ions and hydrochloric acid

  • [Cu(H2O)6]2+(aq) +4CL-(aq) --> [CuCl4]2-(aq) +6H2O(l)
  • From pale blue to dark blue, in the reaction four of the water ligands are replaced by four ammonia ligands [Cu(NH3)4(H2O)2]2+
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2. A transition element is

  • A d-block element that forms an ion with an incomplete d sub shell
  • The 4s orbital fills before the orbitals in the 3d sub shell. The d block metals will have filled there 4s orbital before electrons are added to the 3d sub shell

3. EDTA is used in detergents to reduce hardness of water, in food to act as a stabiliser stopping the oxidation of the product and in

  • Forms a coordiate bond with a metal ion in a complex, it is known as a chelating agent which means it decreases the concentration of metal ions in solution by binding to them
  • Medical applications, added to blood to prevent clotting and to treat patiens suffering from lead and mercury posioning
  • The total number of coordinate bonds formed between a central metal ion and its ligands

4. Fe2+ ions are pale green in solution, and when they react with NaOH they form

  • Green precipitate (iron(II)hydroxide), turning rusty brown at surface in presence of air
  • Pale yellow turning rusty brown
  • Blue precipitates, turning beige in the presence of air

5. The transition elements from titanium to copper all form ions with two or more

  • Oxidation states, all forming compounds with ions in the 2+ oxidation state (this is usually the result of losing two electrons from 4s orbital, which are lost first as when full 4s is in a higher energy level that 3d)
  • The 4s orbital fills before the orbitals in the 3d sub shell. The d block metals will have filled there 4s orbital before electrons are added to the 3d sub shell

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I'm sorry about the last comment, my friend wrote it because he didn't want to accept that he got some answers wrong in this quiz. I just got 100% on this quiz and with it It helped enhance my knowledge on Transition Metals as a whole. Keep up with the resources guys!!! 

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