C401Ch20LN1 - Chapter 20 Transition Metals Coordination...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 20: Transition Metals Coordination Compounds Part 1 Transition Metals The transition metals include the d-block, Groups 3-12. The inner transition metals include the f-block elements. Many transition metals form beautifully colored solids and solutions. Electron Configuration Review Remember that the valence electrons are the electrons in the highest energy level? Although the d-electrons aren’t in the highest energy level, they are very close in energy to the s electrons in the next higher energy level. Ex: 3d energy level is very close to the 4s energy level. What this means is that we can count the valence electrons as the (n-1)d + ns electrons. For example Ni has the e- configuration: [Ar]3d 8 4s 2 so it has 8+2=10 valence e- What is the e- configuration and # of valence e- for Cu? Also, remember that when a transition metal forms an ion, the s electrons are lost first ! So if we form the Ni 2+ ion, then the e- configuration for this ion is [Ar]3d 8 Furthermore, the Ni 2+ ion now only has 8 valence e- (don’t count the lower s and p, just the d)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

C401Ch20LN1 - Chapter 20 Transition Metals Coordination...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online