Your first step should be to analyse the compound. For example, if the compound is carbon, you know it always has a valence of four, so, if it has a formula C2H4 (ethylene) it obviously has a double bond. There are difficulties here because benzene C6H6 can be considered to have 6 1.5 C-C bonds, being aromatic.
A second step is to look at its structure. Double bonds are traditionally shorter than single bonds; triple bonds shorter still. Covalent bonds do have typical lengths, nevertheless you can still have problems.
<span>A third step is to consider reactivity. For example, if you have a C=C double bond, you can add, say, bromine to it Thus C2H4 gives C2H4Br2, and by adding two bromine atoms you know you have one double bond. Again, benzene becomes an awkward molecule, but because of this, you know benzene does not have double bonds in the traditional sense</span>
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When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).
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In ionic compounds, the charges of constituent ions must balance. This can be achieved by having three sodium ions per nitride ion. Therefore, the formula of sodium nitride is Na3N
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Explanation:
The music of France reflects a diverse array of styles. In the field of classical music, France has produced several prominent romantic composers, while folk and popular music have seen the rise of the chanson and cabaret style. The earliest known sound recording device in the world, the phonautograph, was patented in France by Édouard-Léon Scott de Martinville in 1857. France is also the 5th largest market by value in the world, and its music industry has produced many internationally renowned artists, especially in the nouvelle chanson and electronic music.
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Explanation:
Here, we want to select a disadvantage of the power sources
The two listed are examples of renewable power sources with no level of pollution
However, in the case of wind, a wind turbine is needed and could only work in places where the wind is prevalent enough throughout the year. Likewise, hydroelectric power, can only work where we have a flowing water source
Thus, there is a bane of geographic and climatic restrictions serving as a disadvantage
