Beryllium and Chlorine - Comparison - Properties

This article contains comparison of key thermal and atomic properties of beryllium and chlorine, two comparable chemical elements from the periodic table. It also contains basic descriptions and applications of both elements. Beryllium vs Chlorine.

beryllium and chlorine - comparison

Compare beryllium with another element

Compare chlorine with another element

Beryllium and Chlorine – About Elements

Beryllium

Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. Beryllium has a large scattering cross section for high-energy neutrons, about 6 barns for energies above approximately 10 keV. Therefore, it works as a neutron reflector and neutron moderator, effectively slowing the neutrons to the thermal energy. Since berylium has very low threshold energy for neutron emission, it can be used as a neutron source in nuclear reactors. The Sb-Be source is based on (γ,n) reaction (i.e. it emits photoneutrons).

Chlorine

Chlorine is a yellow-green gas at room temperature. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine.

Beryllium in Periodic Table

Chlorine in Periodic Table

Source: www.luciteria.com

Beryllium and Chlorine – Applications

Beryllium

Berylium can be utilized as alloying agent in production of beryllium-copper, X-ray detection diagnostics, manufacture of computer peripherals, in nuclear reactors as neutron moderators and reflectors. 80% of the beryllium used goes into copper beryllium alloys. The combination of light weight with high strength at extreme temperatures makes beryllium metal and aluminium beryllium alloys ideal for use in high performance aerospace applications such as components of rockets. Transparency to x-radiation makes pure beryllium metal essential in security equipment and high-resolution medical imaging technology, such as mammography to detect breast cancer. Copper beryllium is the hardest and strongest of any copper alloy (UTS up to 1,400 MPa), in the fully heat treated and cold worked condition. It combines high strength with non-magnetic and non-sparking qualities and it is similar in mechanical properties to many high strength alloy steels but, compared to steels, it has better corrosion resistance.

Chlorine

Chlorine is used in the manufacture of a wide range of consumer products, about two-thirds of them organic chemicals such as polyvinyl chloride (PVC), many intermediates for the production of plastics, and other end products which do not contain the element. As a common disinfectant, elemental chlorine and chlorine-generating compounds are used more directly in swimming pools to keep them sanitary. While perhaps best known for its role in providing clean drinking water, chlorine chemistry also helps provide energy-efficient building materials, electronics, fiber optics, solar energy cells, 93 percent of life-saving pharmaceuticals, 86 percent of crop protection compounds, medical plastics, and much more.

Beryllium and Chlorine – Comparison in Table

Element	Beryllium	Chlorine
Density	1.848 g/cm3	0.0032/cm3
Ultimate Tensile Strength	345 MPa	N/A
Yield Strength	N/A	N/A
Young’s Modulus of Elasticity	287 GPa	N/A
Mohs Scale	5.5	N/A
Brinell Hardness	600 MPa	N/A
Vickers Hardness	1670 MPa	N/A
Melting Point	1278 °C	-101 °C
Boiling Point	2469 °C	-34.6 °C
Thermal Conductivity	200 W/mK	0.0089 W/mK
Thermal Expansion Coefficient	11.3 µm/mK	— µm/mK
Specific Heat	1.82 J/g K	0.48 J/g K
Heat of Fusion	12.2 kJ/mol	3.23 kJ/mol
Heat of Vaporization	292.4 kJ/mol	10.2 kJ/mol