Chem test 4 things to remember

Things to remember para the test

Names of metals in anionic complex

Names of metals in anionic complex

Copper: cuprate

Lead: Plumbate

Iron: ferrate

Silver: Argentate

Tin: stannate

Bidentate ligands

en

Oxalate ion (C2O4 2-)

Polydentate ligand

Ethylenediaminetetraacetate

Has 6 donor atoms

Optical Isomerism

• Octahedral

• Metal ion has 3 bidentate ligands OR

• 2 bidentate and 2 monodentate ligands

Example of optical isomerism with 3 bidentate ligands

[Co(en)3]3+

Example of optical isomerism with 2 bidentate and 2 monodentate

cis-[Co(en)2Cl2]+

Geometric (Cis-trans) isomer

come in pairs

-Main element with 2 pairs of ligands on side

-90 degrees on cis

-180 degrees on trans

Ex: cis-[Pt(NH3)2Cl2]

Coordination Isomer

ligands can switch spots with outside counter ion

Linkage isomer

Can attach ligand to metal through different isomers

Ex:

Strong ligand

• Large delta

• Low spin complex

Weak ligand

• small delta

• high spin complex

Diamagnetic

All electrons are paired

Paramagnetic

Has unpaired electrons

How to know if something will be colorless

has d0 or d10

What absorbs the longest wavelength?

Smallest delta (weakest field ligand)

What absorbs the shortest wavelength?

Largest delta (strongest field ligand)

What is mass # and atomic #

Mass # top

Atomic # bottom

Nuclear Fusion

Go from smaller to bigger nuclei

Nuclear Fission

Bigger to smaller nuclei

What number is the minimum to be radioactive?

Z > 83

Proton

1/1 P and 1/1 H

Positron

0/+1 e or 0/+1 B

Neutron

1/0 n

Alpha particle (or He nucleus)

4/2 He or 4/2 alpha

electron (or B particle)

0/-1 e or 0/-1 B

What to do if have too many neutrons? (above belt of stability)

Beta particle emission

What to do if you have too few neutrons? (below belt of stability)

positron emission

or electron capture

Abbreviated notation for bombardment reaction

Reactant (bombarded particle, emitted particle) product

What two isotopes are always radioactive?

1. Technetium (z=43) Tc

2. Promethium (z=61) Pm