Strontium and Iodine - Comparison - Properties

This article contains comparison of key thermal and atomic properties of strontium and iodine, two comparable chemical elements from the periodic table. It also contains basic descriptions and applications of both elements. Strontium vs Iodine.

strontium and iodine - comparison

Compare strontium with another element

Compare iodine with another element

Strontium and Iodine – About Elements

Strontium

Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically.

Iodine

Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. It is even less abundant than the so-called rare earths. It is the heaviest essential mineral nutrient.

Strontium in Periodic Table

Iodine in Periodic Table

Source: www.luciteria.com

Strontium and Iodine – Applications

Strontium

Consuming 75% of production, the primary use for strontium was in glass for colour television cathode ray tubes. Strontium is best known for the brilliant reds its salts give to fireworks and flares. It is also used in producing ferrite magnets and refining zinc. Modern ‘glow-in-the-dark’ paints and plastics contain strontium aluminate. They absorb light during the day and release it slowly for hours afterwards. The isotope Sr90 has a half-life of 28 years and is one of the well-known high-energy beta emitters. Hence, it is employed in systems for nuclear auxiliary power (SNAP) devices, which find potential applications in remote weather stations, space vehicles, navigational buoys, etc.

Iodine

In addition to nutrition products, iodine and iodine derivatives are used in a wide range of medical, agricultural, and industrial applications. About half of all produced iodine goes into various organoiodine compounds, another 15% remains as the pure element, another 15% is used to form potassium iodide, and another 15% for other inorganic iodine compounds. The leading application is in the production of X-ray contrast media (22%). Iodine’s high atomic number and density make it ideally suited for this application, as its presence in the body can help to increase contrast between tissues, organs, and blood vessels with similar X-ray densities. It is used as an antiseptic for external wounds. Another application driving the demand for iodine is in polarizing film in liquidcrystal display (LCD) screens.

Strontium and Iodine – Comparison in Table

Element	Strontium	Iodine
Density	2.63 g/cm3	4.94 g/cm3
Ultimate Tensile Strength	N/A	N/A
Yield Strength	N/A	N/A
Young’s Modulus of Elasticity	15.7 GPa	N/A
Mohs Scale	1.8	N/A
Brinell Hardness	N/A	N/A
Vickers Hardness	N/A	N/A
Melting Point	777 °C	113.5 °C
Boiling Point	1382 °C	184 °C
Thermal Conductivity	35.3 W/mK	0.449 W/mK
Thermal Expansion Coefficient	22.5 µm/mK	N/A
Specific Heat	0.3 J/g K	0.214 J/g K
Heat of Fusion	8.3 kJ/mol	7.824 kJ/mol
Heat of Vaporization	144 kJ/mol	20.752 kJ/mol