Alkaline earth metal
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The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium, magnesium, calcium, strontium, barium, and radium. The elements have very similar properties:
Emerald is a form of beryl, the principal mineral of beryllium.
Barite, the material that was first found to contain barium.
Series of alkaline earth metals.
Emerald, colored green with trace amounts of chromium, is a variety of the mineral beryl which is beryllium aluminum silicate.
Periodic table
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The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows and columns. An icon of chemistry, the periodic table is widely used
Alkaline earth metal
…The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). The elements have very similar properties: they…
Liquid mercury. Its liquid state at standard conditions is the result of relativistic effects.
Graphite and diamond, two allotropes of carbon
Iron, a metal
Sulfur, a nonmetal