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Copper (Cu), sulfur (S), and oxygen (O) are the elements that make up the compound copper(II) sulfate (CuSO4).
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Oxygen. This is the most typical form of elemental Oxygen. Since it consists of Oxygen atoms only it is not a compound which is a combination of two or more elements.
O2 is most common gas found in the earths atmosphere. The name of this compound is Di oxygen. It is formed by bonding 2 oxygen atoms covalently.
O2 is oxygen molecule.It exists in diatomic state.It means two atoms of oxygen are combined to form a molecule.
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The two allotropes of oxygen are O2 (dioxygen) and O3 (ozone). Dioxygen is the most common form of oxygen in the Earth's atmosphere, while ozone is a less common form found in the stratosphere where it plays a crucial role in absorbing ultraviolet radiation.
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This could be one of two things, depending on if you are referring to substances that are elements, or substances that are compounds:
- Allotropes are different structural modifications of an element. They the same element (the same atoms) that bond together in different ways. For example, dioxygen (O2), ozone (O3), tetraoxygen (O4) and octaoxygen (O8) are allotropes of oxygen.
- Isomers are compounds that share the same molecular formula but have different structural formulas. For example, propanol has the formula C3H8O (or C3H7OH) and occurs as two isomers: propan-1-ol (n-propyl alcohol; I) and propan-2-ol (isopropyl alcohol; II).
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Two molecules with identical molecular formulas but that have different structures are called isomers. Fuels such as gasoline are nonpolar and high in energy because they are largely composed of hydrocarbons.
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Metal oxides are chemical compounds containing a metal and oxygen; the are generally solids.
They are formed by reaction with oxygen from the air.
Oxides of more electropositive elements tend to be basic. They are called basic anhydrides; adding water, they may form basic hydroxides. For example, sodium oxide is basic; when hydrated, it forms sodium hydroxide.
Oxides of more electronegative elements tend to be acidic. They are called acid anhydrides; adding water, they form oxoacids. For example, dichlorine heptoxide is acid; perchloric acid is a more hydrated form.
Some oxides can act as both acid and base at different times. They are amphoteric. An example is aluminium oxide. Some oxides do not show behavior as either acid or base.
The oxides of the chemical elements in their highest oxidation state are predictable and the chemical formula can be derived from the number of valence electrons for that element. Even the chemical formula of O4, tetraoxygen, is predictable as a group 16 element. One exception is copper for which the highest oxidation state oxide is copper(II) oxide and not copper(I) oxide. Another exception is fluorine that does not exist as expected as F2O7 but as OF2.[1] Since F is more electronegative than O, OF2 does not represent an oxide of fluorine, but instead represents a fluoride of oxygen. Phosphorus pentoxide, the third exception is not properly represented by the chemical formula P2O5 but by P4O10.
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When metals react with oxygen, they typically form metal oxides. The nature of the metal oxide formed depends on the specific metal involved in the reaction. Metal oxides are typically solid compounds that can be basic, amphoteric, or acidic in nature.
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