Of all the elements, gold in its pure state is undoubtedly the most beautiful.
Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust, occurring only as the decay product of various heavier elements. All of astatine's isotopes are short-lived; the most stable is astatine-210, with a half-life of 8.1 hours.
Hydrogen is the most abundant element in the universe – all of the hydrogen in the universe has its origin in the first few moments after the Big Bang. It is the third most abundant element on the Earth's surface after oxygen and silicon.
Chromium was discovered within the mineral Siberian red lead in 1797 by French chemist Louis-Nicolas Vauquelin. The mineral had been discovered two decades prior and took on a form and color that was unlike any other mineral. Vauquelin was convinced the uniqueness of this mineral was due to an undiscovered metal.
The color blue that is found in foods, plants, and animals lacks a chemical compound that makes them blue, which makes the natural blue pigment so rare.
Blue is one of the rarest of colors in nature. Even the few animals and plants that appear blue don't actually contain the color. These vibrant blue organisms have developed some unique features that use the physics of light.
Osmium, rhodium and iridium are probably the rarest metals found in the Earth's crust with average concentrations of 0.0001, 0.0002 and 0.0003 parts per million by weight respectively.
The strongest material in the universe may be the whimsically named "nuclear pasta." You can find this substance in the crust of neutron stars. This amazing material is super-dense, and is 10 billion times harder to break than steel.
Scientific element: Francium
The most expensive and second rarest natural element.
The most expensive natural element is francium. Although francium occurs naturally, it decays so quickly that it cannot be collected for use. Only a few atoms of francium have been produced commercially, so if you wanted to produce 100 grams of francium, you could expect to pay a few billion U.S. dollars for it.
Uranium was discovered in 1789 by German chemist Martin Heinrich Klaproth. It is the heaviest naturally occurring element in the universe and is naturally radioactive. Its nucleus is unstable, so the element is in a constant state of decay, seeking a more stable arrangement.
Hofmann's original colour scheme (carbon = black, hydrogen = white, nitrogen = blue, oxygen = red, chlorine = green, and sulphur = yellow) has evolved into the later color schemes.
Einsteinium is an element with a famous name that almost no one has heard of. With 99 protons and 99 electrons, it sits in obscurity near the bottom of the periodic table of chemical elements, between californium and fermium.
In short, the answer is no. The statement 'diamond is an element' is misleading as carbon itself is an element. While a diamond is composed of 100% of carbon with no other elements involved, it is not an element but simply an allotrope of the element carbon.
The least expensive elements are Carbon, Sulphur, and Chlorine which are cheap by their mass. Hydrogen, Oxygen, Nitrogen, and Chlorine are the least expensive elements by their volume in the atmospheric pressure.
The hardest pure element is carbon in the form of a diamond.
Almost every galaxy can be classified as a spiral, elliptical, or irregular galaxy. Only 1-in-10,000 galaxies fall into the rarest category of all: ring galaxies.
The rarest stable metal is tantalum. The rarest metal on earth is actually francium, but because this unstable element has a half life of a mere 22 minutes, it has no practical use.
Astatine is therefore the rarest element in the periodic table because it's the hardest to produce. So hard to produce, in fact, that the scientists who first created it in 1939 couldn't detect its existence directly and had to resort to a trick.
Legendary is a soft, gray, millennial beige with a silvery undertone. It is a perfect paint color for a living room or exterior home.
Magenta doesn't exist because it has no wavelength; there's no place for it on the spectrum. The only reason we see it is because our brain doesn't like having green (magenta's complement) between purple and red, so it substitutes a new thing.