Alkaline Earth Metal

By: Tinsley Ratliff, Miryam Rudolph, and Jessica Brown

Alkaline Earth Metals

This is the Alkaline Earth Metals on the periodic table.

They have two Valence Electrons.

The Alkaline Earth Metals are in the second column/group/family of the Periodic Table. They are next to group one, the Alkali Metals. To the right of Alkaline Earth Metals is the Transition Metals.

Beryllium

Beryllium (Be)

Discovered in: 1797

Discovered (Where): France

Discovered By: Louis Nicolas Vauquelin

How: It was founded when Vauquelin dissolved aluminium hydroxide from emerald and beryl in an additional alkali.


Atomic Number: 4 Atomic Mass: 9.012 Atomic Symbol: Be


Beryllium used a lot for military purposes. Some of it is in nuclear explosives. Also, there are beryllium mirrors.


Beryllium- Melting Point:1280°C

Beryllium- Boiling Point: 2970°C



Magnesium

Magnesium (Mg)

Discovered in: 1755

Discovered (Where): Great Britain

Discovered by: Joseph Black

How: Humphry Davy in 1808 used a mixture of magnesia and mercuric oxide and isolated the element.



Atomic Number: 12 Atomic Mass: 24.31 Atomic Symbol: Mg


Safety Concern: Magnesium has human take up between 250-300 mg of magnesium Humans need at least 200 mg of magnesium. Magnesium oxide is very aquatic toxicity(the degree in which something poisonous).

Magnesium is sometimes compared to aluminum and is used in automobiles and trucks many times.


Magnesium- Melting Point: 1,202°F (650°C)

Magnesium- Boiling Point: 1091 °C, 1994 °F






Strontium

Strontium (Sr)

Discovered in: 1787

Discovered (Where): Great Britain

Discovered by: William Cruickshank

How: Humphry Davy also used a mixture containing strontium chloride and mercuric oxide to isolate strontium.



Atomic Number: 38 Atomic Mass: 87.61 Atomic Symbol: Sr


Strontium is a lot like calcium. It also is used for glass in color Tv’s.


Strontium- Melting Point: 769°C

Strontium- Boiling Point:1384°C




Calcium

Calcium (Ca)

Discovered in: 1808

Discovered (Where): Great Britain

Discovered by: Humphry Davy

How: Humphry Davy used a mixture of lime and mercury oxide to isolate calcium.



Atomic Number: 20 Atomic Mass: 40.08 Atomic Symbol: Ca



Safety Concern: Calcium is sometimes referred to as a lime. Calcium is Mostly found in milk, milk products, and lastly vegetables. Calcium is the most abundant metal in the human body. Calcium is the main part of bones and threats and it has keys metabolic functions.

Calcium itself is not used in many products but when combined, it makes many things. For example, calcium gluconate is used for vitamin pills and foods, calcium tungstate is used for luminous paint and x-rays,


Calcium- Melting point: 840 °C

Calcium- boiling point 1484°C









Barium

Barium (Ba)

Discovered in: 1774 and 1808

Discovered (Where): Great Britain

Discovered by: Humphry Davy and Carl Scheele

How: Carl Scheele in 1774 identified Barium as an element but could not isolate it. Humphry Davy did in 1808.



Atomic Number: 56 Atomic Mass: 137.3 Atomic Symbol: Ba


Barium sulfate helps when drilling for oil and digging oil wells. It is very useful in the petroleum business.


Barium-Melting Point: 725°C

Barium-Boiling Point: 1640°C




Radium

Radium (Ra)

Discovered in: December 21, 1898

Discovered (Where): France

Discovered by: Marie Curie and her husband, Pierre

How: They were looking at a uraninite sample and when they took uranium from it, it was radioactive. When they took the radioactive sample away from it, the sample became bright green and crimson.



Atomic Number: 88 Atomic Mass: 226 Atomic Symbol: Ra


Can be used to treat cancer, in the form of radium chloride. It was once in toothpaste and hair creams in the 1900’s. In Japan, they put radium in spa water.


Radium-Melting Point: 700°C

Radium-Boiling Point: 1140°C




Citations

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57gP

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