Zinc (Zn)

Made by: Kyle Emmerling

Properties of Zinc

The atomic mass of zinc is 65.39, with a radius of 142pm (picometeres), and a density of 7.140 g/cc. Zinc has a melting point of 419.53°C and a boiling point of 907°C, this would make Zinc solid at room temperature (21°C). In its natural solid state, Zinc is a silvery-white metal that tarnishes(to lack or lose luster) after being exposed to air. Due to it being a metal, Zinc is a conductor. Oddly it is brittle unless at 100 to 150°C. In terms of harness Zinc is on Mohs scale a 2.5 MPa and on on Brinell’s it is a 412MPa rating for hardness.


For Chemical properties, due to Zinc being a metal it is not flammable, and it reacts with air (tarnishing) and with iron, steel, and other metals (galvanizing)

Hot-Dip Galvanizing: Protecting Steel For Generations

Identification

Atomic number: 30

Mass Number: 65.39

Protons: 30

Neutrons: Average of 35 (Depends on Isotope)

Electrons: 30

Located twelfth group fourth period

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History

Zinc was originally used by Romans and in India for brass, but wasn't identified as an element until the 1400's in Germany. Even though it was first found in Germany, there were no records of the person/people first used it/ discovered it it Rome and/or India. The Romans and Indians used it for brass, and it was later used for stainless steal.

Applications/Uses

Used in alloys(mainly brass) or for Galvanizing

All natural isotopes include:

Zinc-64

Zinc-66

Zinc-67

Zinc-68

Zinc-70

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Interesting facts

Zinc is vital to life. In fact zinc is the thing that regenerates cells, making it needed for growth, pregnancy, and healing of wounds.


Today the US penny is made of 98% zinc


The more zinc that is in your body the healthier you will be and can actually affect brain activity. The opposite is also true, zinc shortage in the body can lead to growth defects and a slower processing brain.