lobna.nassr

Lobna Abdel-Mohsen Ebaid Nassr

Professor - Head Of Chemistry Department- Director of Quality Management Unit - Faculty of Science - Sohag University

Faculty of science

Address: Chemistry Department - Faculty of Science - Sohag University

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Transition Elements 311 C

2018-08-29 12:31:31 |

Transition metals course 311 C for third year students (Chemistry Program)

Content:
- General properties of Transition Elements
- Scandium group (Sc – Y – La - Ac)
- Titanium group (Ti – Zr –Hf)
- Vanadium group (V – Nb – Ta)
- Chromium group (Cr – Mo – W)
- Manganese group (Mn – Tc – Re)
- Iron group (Fe – Ru – Os)
- Cobalt group (Co – Rh – Ir)
- Nickel group (Ni – Pd – Pt)
- Copper group (Cu – Ag – Au)
- Zinc group (Zn – Cd – Hg)


2018-08-29 20:30:14 | Transition Elements 311 C
Hg Properties
Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by grinding natural cinnabar or synthetic mercuric sulfide. Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercur... Read more

2018-08-30 20:00:35 | Transition Elements 311 C
General Properties
THE ELEMENTS OF THE FIRST TRANSITION SERIES ARE THOSE FOR WHICH THE 3D ELECTRON SHELL CONTAINS BETWEEN ONE AND NINE ELECTRONS. COPPER IS INCLUDED BECAUSE, ALTHOUGH ITS OUTER ELECTRONIC CONFIGURATION IS 3D10 4S1, IT HAS THE 3D9 CONFIGURATION IN ITS COMMONLY OCCURRING +2 OXIDATION STATE. ZINC IS NOT N... Read more

2018-09-22 22:10:27 | Transition Elements 311 C
Lanthanide contraction
The elements following the lanthanides in the periodic table are influenced by the lanthanide contraction. The radii of the period-6 transition metals are smaller than would be expected if there were no lanthanides, and are in fact very similar to the radii of the period-5 transition metals, since t... Read more

2018-10-17 20:06:42 | Transition Elements 311 C
Charge Transfer
The observed color of a substance can be determined from the color of the light absorbed. What is “seen” is the complimentary colors. When light passes through a material some wavelengths are absorbed. If absorption occurs in the visible region of the spectrum, the transmitted light is coloured... Read more

Transition metals: colour of salts

2018-08-29 20:45:20 Transition Elements 311 C
TRANSITION METALS: COLOUR OF SALTS Transition elements are usually characterised by having d orbitals. Now when the metal is not bonded to anything else, these d orbital Read more

Per Table

2018-08-29 21:00:27 Transition Elements 311 C
The PERIODIC TABLE, or PERIODIC TABLE OF ELEMENTS, is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurrin Read more

Applications of transition elements

2018-09-22 21:46:57 Transition Elements 311 C
Some important applications of the compounds derived from transition elements: Some coloured inorganic compounds - derived from transition elements - are used as pigment Read more

Applications of zirconium and its compou

2018-11-30 22:32:43 Transition Elements 311 C
APPLICATIONS OF zirconium and zirconium compounds Zirconium is a member of titanium group. Zirconium is used in nuclear reactors. - Zirconium Diamide-Diamine complex Read more

Oxidation state (V) for Niobium

2018-11-30 22:10:43 Transition Elements 311 C
Oxidation state (V) for Niobium Niobium(V) halides Niobium(V) chloride is a yellow crystalline solid, forms chloro-bridged dimers in the solid state. Each niobium cente Read more

Cr(III) Acetate

2018-11-30 22:20:41 Transition Elements 311 C
OXIDATION STATE (+III) OF CHROMIUM (D3)OXIDATION STATE (+III) OF CHROMIUM (D3)OXIDATION STATE (+III) OF CHROMIUM (D3) Cr3+ form unusual BASIC ACETATE, [CR3O(CH3COO)6L Read more

Oxidation state (+II) of chromium

2018-11-30 21:41:34 Transition Elements 311 C
OXIDATION STATE (+II) OF CHROMIUM Chromium acetate dihydrate (red solid compound) is a good starting material for the preparation of other CR2CR2+ salts. It is prepare Read more

Electron configuration

2018-11-30 21:21:36 Transition Elements 311 C
AUFBAU PRINCIPLE AND MADELUNG RULE The Aufbau principle (from the German _Aufbau_, "building up, construction") was an important part of Bohr's original concept of elect Read more

Size of transition elements

2018-11-30 21:36:59 Transition Elements 311 C
Size of transition elements The radii decrease with increasing atomic number and then increase again toward the end of each transition series. Ni has the smallest radii Read more

Sustainable Development

2018-11-29 15:51:46 Transition Elements 311 C
SUSTAINABLE DEVELOPMENT is the organizing principle for meeting human development goals while at the same time sustaining the ability of natural systems to provide the na Read more

Charge Transfer

2018-11-29 15:56:01 Transition Elements 311 C
LMCT complexes arise from transfer of electrons from MO with ligand-like character to those with metal-like character. Metal-to-ligand charge-transfer (MLCT) complexes a Read more

Application of Ag and Au

2018-11-29 16:03:55 Transition Elements 311 C
Applicatins of silve and its compounds: The principal use of silver is as a precious metal. Applications of Gold and its compounds Gold and its many alloys are most of Read more

Fe Extraction

2018-11-29 16:14:13 Transition Elements 311 C
The main steps of Extraction of Iron in a Blast Furnace: *THE BLAST FURNACE IS CHARGED FROM THE TOP WITH IRON ORE, COKE (REDUCING AGENT) AND CACO3 (SLAG FORMING SUBSTANC Read more

Melting and boiling points of transition

2018-11-30 21:36:59 Transition Elements 311 C
Melting and boiling points of transition elements Melting points and boiling points of transition elements are very high. Most of melting points are higher than 1000 C Read more

Density of transition elements

2018-11-30 21:38:13 Transition Elements 311 C
The densities of transition elements The densities of transition elements are high, most of them have d > 5 gm/cm3 Density initially increases across each series and t Read more

Oxidation state (IV) for Niobium

2018-11-30 21:43:47 Transition Elements 311 C
Oxidation state (IV) for Niobium Niobium(IV) halides NIOBIUM(IV) CHLORIDE or NIOBIUM TETRACHLORIDE NbCl4 exists as dark violet crystals, it is HIGHLYSENSITIVE TO AIR AN Read more

Oxidation state (II) of molybdenum and t

2018-11-30 21:59:32 Transition Elements 311 C
Oxidation state (II) of molybdenum and tungsten Halides of molybdenum(II) and tungsten(II) molybdenum(II) halides (MoX2) and tungsten(II) halides (WX2): All MX2 are kn Read more

Peroxo compounds of Chromium (VI)

2018-11-30 22:47:41 Transition Elements 311 C
PEROXO COMPOUNDS OF CHROMIUM (VI) When CR6CR6+ reacts with H2O2H2O2H2O2H2O2, the product depends on the PH and [CR6+][CR6+][CR6+]: IN ACIDIC SOLUTION: CrO(O2)2 is form Read more

Complex Shapes

2018-12-01 00:43:32 Transition Elements 311 C
Transition metals can have any of four possible ion complex shapes. The ION COMPLEX SHAPE is the orientation of LIGANDS, or molecules that are attached to the transition Read more

Basic copper carbonates

2018-12-01 22:15:51 Transition Elements 311 C
BASIC COPPER CARBONATES Copper in moist air slowly acquires a dull green coating because its top layer has oxidised with the air. Some architects use this material on ro Read more