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Transition Metals and Their Complexes

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Multiple Choice

Which of the following statements is/are not correct?

  1. Mn metal is used as a scavenger in making steel.
  2. All known isotopes of Tc are radioactive, except Tc98.
  3. Re is used in the making of electric furnace windings and spectrophotometer filaments.
  1. Only 1
  2. Only 2
  3. Only 3
  4. 1 and 2
  5. 2 and 3
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