15.1 the atoms & ions of transition elements Flashcards
1
Q
what is the definition of a transition element?
A
d-block elements that could form at least 1 stable ion with incomplete d-subshell
2
Q
why are Cr & Cu exceptions in their electronic arrangement?
A
it creates a more stable half-full / full 3d orbital
3
Q
which subshell fills first & why?
A
4s - it is more stable than 3d
- as 3d fills (which is closer to nucleus) repels 4s to higher energy levels
4
Q
which subshell loses e- first?
A
4s
