A polyatomic ion is similar to a covalent compound in as much as the atoms in the polyatomic ion are covalently bound, and it is a compound, but it has a charge. Hence it is an ION.
I'm not sure what you mean by "purely covalent", since the ionic-vs-covalent distinction is expressed in terms of electronegativity, which can take a range of values (higher values = more ionic). CO is very much a covalent compound though.
A sulfide ion is an ion of just the sulfur atom on its own, whereas a sulfate ion is an ion that is composed of sulfur and oxygen, typically SO42-.
An Ionic bond is one where an element gives away electrons to another, forming Ions. It usually occurs between metals and nonmetals. Another way to tell is if the electronegativity difference between the elements is greater than 2.0 then it is an ionic bond. A covalent bond is one where the elements share electrons with one another. It usually occurs between nonmetals. If the electronegativity difference between the elements is 2.0 or less it is a covalent bond.
Covalent is two non-metals sharing electrons while Ionic is a metal and a nonmetal where one takes an electron and changes both of the elements charges for example Nitrogen and Oxygen would be covalent while Iron and Oxygen would be Ionic
5) Listed below are solubility vs temperature data for an organic compound in water. temp. sol. in 10 mL water 0 0.15 g 20 0.30 g 40 0.65 g 60 1.10 g 80 1.70 g a. Using the data in the above table, graph the solubility of the compound vs temperature. Connect the data points with a smooth curve. b. Suppose 0.1 g of this compound is mixed with 1.0 mL of water and heated to 80° C. Would all of the compound dissolve? Explain. c. The solution prepared in (b) is cooled. At what temperature will crystals of the compound appear? d. Suppose the cooling described in (c) were continued to 0° C. How many grams of the compound would come out of solution?
I'm not sure what you mean by "purely covalent", since the ionic-vs-covalent distinction is expressed in terms of electronegativity, which can take a range of values (higher values = more ionic). CO is very much a covalent compound though.
A sulfide ion is an ion of just the sulfur atom on its own, whereas a sulfate ion is an ion that is composed of sulfur and oxygen, typically SO42-.
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A pure element or a pure compound are homogeneous.
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I think what you mean is Mg(OH)2 vs MgO2H2. This is an ionic compound because it has a metal (magnesium). In it, Mg+2 is the cation (positive ion) and OH- is the anion. Because an ionic compound must have a zero net charge, there needs to be two OH- ions to cancel the +2 charge of the magnesium. so in the first formula it is shown that there are two OH- ions, but the second one is incorrect because OH is one ion and the elements are not separately written like that in an ionic compounds formula. hope this helps
Consumer vs producer is not an applicable categorization for Ammonia. Ammonia is a substance, a chemical compound.
Simple fracture vs. Compound Fracture (bone protrudes through skin)
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While a sodium ion and neon atom both have 10 electrons they are of different elements as a neon atom has 10 protons while sodium has 11. As a result the neon atom is neutral while the sodium ion carries a positive charge. So neon can exist on its own as a gas while sodium ion needs a negative ion to balance its charge and form an ionic solid.
Strength of Covalent Bond vs Ionic Bond Apparently, ... When I check bond energies, they seem to be in the same range. ... [all in the gas phase] ...