Transition Metals Flashcards
What happens when you mix an aqueous solution of transition element ions with aqueous sodium hydroxide or aqueous ammonia?
You get a coloured hydroxide precipitate
In aqueous solutions what form do transition elements make?
[M(H2O)6}N+ — a hex aqua complex
What colour are manganese 7+ ions?
purple
What colour are manganese 6+ ions?
Green
What colour are manganese 2+ ions?
PAle pink
What colour are titanium 3+ ions?
Purple
What colour are titanium 2+ ions?
Violet
What colour are vanadium 5+ ions?
Yellow
What colour are vanadium 4+ ions?
Blue
What colour are vanadium 3+ ions?
Green
What colour are vanadium 2+ ions?
Violet
What colour are chromium 6+ ions?
Orange
What colour are chromium 3+ ions?
Green
What colour are iron 3+ ions?
Yellow
What colour are iron 2+ ions?
Pale green
What colour are cobalt 2+ ions?
Pink
What colour are nickel 2+ ions?
Green
What colour are copper 2+ ions?
pale blue
What is the electronic configuration of vanadium?
1s2,2s2,2p6,3s2,3p6,4s2,3d3
What is the definition of a transition element?
A transition element is a d-block element that can form at least one stable ion with an incomplete sub shell
Which two d block elements are not transition elements?
Scandium and zinc
Which two d block elements substitute a 4s electron to complete their 3d sub shell?
Chromium and copper
Why do chromium and copper fill weirdly?
To allow their 3d subshell to be more stable
Why are scandium and zinc not transition elements?
Because in their ion state they have a complete d subshell
