Category Archives: Table of The Elements

Nickel
5
Mar

Overview

Nickel is a silvery, ductile transition metal valued for corrosion resistance, catalytic activity and alloying behavior.

Properties

It is ferromagnetic at room temperature, forms stable alloys and exhibits common +2 and +3 oxidation states in compounds.

Occurrence and Uses

Nickel is used in stainless steels, superalloys, electroplating, rechargeable battery cathodes and catalysts in chemical industry.

Isotopes and Safety

Stable isotopes include Ni 58, Ni 60; nickel compounds can be allergenic and some are carcinogenic, so exposure controls are required in industry.

Sulfur
3
Mar

Overview

Sulfur is a brittle, yellow nonmetal that forms multiple allotropes and a wide range of compounds.

Properties

It is insoluble in water, burns to produce sulfur dioxide and forms sulfides and sulfates with many elements.

Occurrence and Uses

Found near volcanic regions and in mineral deposits, sulfur is used in fertilizers, sulfuric acid production and rubber vulcanization.

Isotopes and Safety

Stable isotopes include S 32, S 33, S 34 and S 36; sulfur dioxide is an irritant and environmental pollutant requiring emission controls.

Livermorium
2
Mar

Overview

Livermorium is a man made element synthesized to explore the properties of superheavy nuclei and test theoretical models of nuclear stability.

Properties

Theoretical chemistry predicts chalcogen like behavior modified by relativistic effects; experimental data are extremely limited.

Occurrence and Uses

Produced only in specialized accelerator facilities for fundamental research into heavy element decay and atomic structure.

Isotopes and Safety

Livermorium isotopes are radioactive and short lived; handling requires remote manipulation, shielding and strict radiological safeguards.

Chromium
28
Feb

Overview

Chromium is a lustrous, hard metal known for forming corrosion resistant alloys and colorful compounds such as chromiumIII and chromiumVI species.

Properties

It has high melting point, forms a protective oxide layer and displays multiple oxidation states with distinct chemical behavior.

Occurrence and Uses

Chromium is used in stainless steel, electroplating, pigments and refractory materials and is mined from chromite ores.

Isotopes and Safety

Stable isotope Cr 52 is common; hexavalent chromium compounds are carcinogenic and require strict industrial hygiene and regulatory controls.

Helium
27
Feb

Overview

Helium is an inert, colorless, odorless noble gas with two protons and two electrons and extremely low boiling point.

Properties

It has very low density, high thermal conductivity and remains liquid at temperatures near absolute zero.

Occurrence and Uses

Found in natural gas deposits and used for MRI cryogenics, gas chromatography and as a lifting gas in controlled applications.

Isotopes and Safety

Stable isotopes He 3 and He 4 exist; helium is nonreactive and poses asphyxiation risk in confined spaces if it displaces oxygen.

Praseodymium
26
Feb

Overview

Praseodymium is a soft, silvery rare earth metal used to impart magnetic and optical properties to materials.

Properties

It commonly forms +3 ions, contributes to strong permanent magnets when alloyed and colors glass and ceramics.

Occurrence and Uses

Praseodymium is used in high strength magnets, specialized glass, aircraft engines and lighting applications.

Isotopes and Safety

Stable isotope Pr 141 is natural; praseodymium compounds are handled with routine industrial precautions.

Sodium
25
Feb

Overview

Sodium is a soft, highly reactive metal that forms stable ionic compounds such as sodium chloride.

Properties

It reacts vigorously with water, has low ionization energy and forms strong ionic bonds in salts.

Occurrence and Uses

Abundant in seawater and minerals, sodium is used in chemical synthesis, metallurgy and as table salt for nutrition.

Isotopes and Safety

Stable Na 23 predominates; metallic sodium is pyrophoric in air and reacts violently with water, requiring inert storage.

Bohrium
23
Feb

Overview

Bohrium is a synthetic element created to investigate the properties of superheavy elements and test periodic trends in group 7.

Properties

Predicted to show chemistry similar to rhenium and other group 7 elements, with possible +7 oxidation states under specific conditions.

Occurrence and Uses

No commercial uses; produced in accelerator facilities for fundamental research in nuclear and atomic physics.

Isotopes and Safety

Bohrium isotopes are radioactive and short lived; experiments require remote handling, containment and radiological safeguards.

Niobium
23
Feb

Overview

Niobium is a soft, gray transition metal valued for its superconducting properties and ability to strengthen steel when alloyed.

Properties

It commonly exhibits a +5 oxidation state, has good corrosion resistance and contributes to high temperature strength in alloys.

Occurrence and Uses

Found in minerals such as columbite and pyrochlore, niobium is used in superalloys, superconducting magnets and specialty steels.

Isotopes and Safety

Stable isotope Nb 93 predominates; niobium metal is of low toxicity though fine powders require handling controls.

Neodymium
22
Feb

Overview

Neodymium is a rare earth metal essential for high performance permanent magnets used in motors and electronics.

Properties

It forms +3 ions, alloys readily to produce strong magnetic materials and has important optical properties in glass.

Occurrence and Uses

Neodymium is used in magnets for wind turbines, electric vehicles, headphones and lasers and in specialty glass.

Isotopes and Safety

Stable isotopes include Nd 142 to Nd 150; neodymium compounds are handled with standard industrial safety measures.