(A1) Transition Metals and Processess Flashcards
What is a transition metal?
An element that forms at least one ion with a partly filled d-subshell
Where are transition metals on the periodic table?
In the d-block
What metals in the d-block are not transition metals?
- Zinc (Zn)
- Scandium (Sc)
Why is Zn and Sc not transition metals?
Because they have full d-orbitals when they form ions
What type of outer shells are stable?
Half-filled and full outer shells
(that is why some elements become 4s2 3d4 to 4s1 3d5)
What are the properties of transition metals?
- They form colored compounds
- Good catalysts
- They can show several different oxidation states in their compound
What are ions often associated with?
Changes in color
What does do the colored solution from transition metals suggest?
- They indicate oxidation or reduction
- Used to determine then end point in titration
What does Fe (III) mean?
Iron III or Fe 3+
What do roman numerals refer to?
They refer to oxidation states
III is 3+
II is 2+
What is Cr (VI), O and why?
CrO3
because Cr6+ and 02-, you need 3 O for 1 Cr
What is V205?
Vanadium Oxide
Where is vanadium oxide used?
As a catalyst in the contact process
Where is Iron used?
As a catalyst in the Haber Process
What does the contact process make?
Sulfuric Acid
