oxygen is the element that is most abundant in the earth's crust.
oxygen is the element that is most abundant in the earth's crust.
what is the element that is most abundant in the earth's crust?
oxygen
oxygen is the most abundant chemical element by mass in the earth's biosphere, air, sea and land. oxygen is the third most abundant chemical element in the universe, after hydrogen and helium. about 0.9% of the sun's mass is oxygen. oxygen constitutes 49.2% of the earth's crust by mass as part of oxide compounds such as silicon dioxide and is the most abundant element by mass in the earth's crust. it is also the major component of the world's oceans (88.8% by mass). oxygen gas is the second most common component of the earth's atmosphere, taking up 20.8% of its volume and 23.1% of its mass (some 10 tonnes). earth is unusual among the planets of the solar system in having such a high concentration of oxygen gas in its atmosphere: mars (with 0.1% by volume) and venus have much less. the surrounding those planets is produced solely by the action of ultraviolet radiation on oxygen-containing molecules such as carbon dioxide.
oxygen
sodium and potassium are very abundant in earth, both being among the ten most common elements in earth's crust; sodium makes up approximately 2.6% of the earth's crust measured by weight, making it the sixth most abundant element overall and the most abundant alkali metal. potassium makes up approximately 1.5% of the earth's crust and is the seventh most abundant element. sodium is found in many different minerals, of which the most common is ordinary salt (sodium chloride), which occurs in vast quantities dissolved in seawater. other solid deposits include halite, amphibole, cryolite, nitratine, and zeolite. many of these solid deposits occur as a result of ancient seas evaporating, which still occurs now in places such as utah's great salt lake and the dead sea. despite their near-equal abundance in earth's crust, sodium is far more common than potassium in the ocean, both because potassium's larger size makes its salts less soluble, and because potassium is bound by silicates in soil and what potassium leaches is absorbed far more readily by plant life than sodium.
alkali metal