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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.

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It is a silvery-white metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.

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It tarnishes to a dull gray upon exposure to air. It is a soft, malleable, and heavy metal with a density exceeding that of most common materials.

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It is commonly known as quicksilver and was formerly named hydrargyrum

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In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal.

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It is a post-transition metal in group 14 of the periodic table. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide, SnO₂.

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Its symbol is Ag, from the Latin argentum, derived from the Greek ὰργὀς, and ultimately from a Proto-Indo-European language root reconstructed as *h₂erǵ-, "grey" or "shining".

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It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas.

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It is the first element in group 12 of the periodic table.

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It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity.

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It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.

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It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core.

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It is a steely-grey, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.

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Calcium is a soft grayish-yellow alkaline earth metal, fifth-most-abundant element by mass in the Earth's crust.

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It was first isolated from potash, the ashes of plants, from which its name derives.

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The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them.

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It is abundant, multivalent, and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S₈.

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White phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth.

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A hard and brittle crystalline solid with a blue-gray metallic luster, it is a tetravalent metalloid.

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Aluminium or aluminum is a chemical element in the boron group,  it is a silvery-white, soft, nonmagnetic, ductile metal.

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Chemical element, metallic, symbol Mg, situated in group IIa in the periodic table, it is silvery white and very light.

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Although sodium is the sixth most abundant element on earth and comprises about 2.6% of the earth's crust.

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Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.

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It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions.

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It is a colorless gas that makes up 21 percent of Earth's atmosphere.

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It is the fifth most abundant element in the universe and makes up about 78% of the earth's atmosphere,

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It is nonmetallic and trivalent—making four electrons available to form covalent chemical bonds.

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It is a soft, silver-white metal belonging to the alkali metal group of chemical elements.

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It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table.

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Hydrogen is present in all organic compounds.