Magnesium was first discovered by an English chemist named Sir Humphry Davy. In 1808, he successfully isolated magnesium through the electrolysis of a combination of mercuric oxide and magnesium oxide. In modern times, m... More » Science Chemistry Atoms & Molecules

As a solid, magnesium has a gray, silvery-white hue. Magnesium is an alkali earth metal that was discovered in 1855 by the Scottish chemist Joseph Black. He was able to differentiate from calcium, an element that exhibit... More »

Joseph Black did not discover the existence of magnesium, but he discovered through his experiments that magnesium is its own compound. His early experiments included mixing magnesium salt with acids. More »

Discovered in 1808 by Sir Humphry Davy, barium is a silvery-white element with an atomic number of 56. It was identified in 1774 by Carl Scheele, but the technology of the time did not allow him to isolate it. Barium was... More »

A neutral atom containing 12 protons is of the element magnesium. If the atom had a positive or negative charge, it would still be of the element magnesium; however, it would then be classified as an ion. More »

Bromine is a highly reactive element that can form bonds with many different elements, including magnesium, silver, oxygen, chlorine and zinc. Most bromine found in the world is in the form of salts, such as potassium br... More »

There are 12 protons in the element magnesium. Its atomic number is twelve, which means that there are 12 protons and 12 electrons in the element. More » Science Chemistry Atoms & Molecules