:Usually covalent compounds will have covalent bonds ( which are very strong ) within a molecule but those molecules will bind to each other by week Van der Waals atraction.
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Beryllium, for example, is classified as an alkaline earth metal although its amphoteric chemistry and tendency to mostly form covalent compounds are both attributes of a chemically weak or post transition metal.
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I would like to go to detail in my lab report about why ammonium cyanate, an ionic compound, spontaneously rearranges to form urea, a covalent compound, and would like to prove it mathematically.
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Why ionic compounds dissolve in covalent compound water ( H 2 O ) ? how does a covalent compound sugar ( C 6 H 12 O 6 ) dissolves in water and not a oil ? is it necessary for all ionic compounds to be soluble in water . Preceding contribs ) 16 : 27, 19 February 2010 ( UTC)
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Why ionic compounds dissolve in covalent compound water ( H 2 O ) ? how does a covalent compound sugar ( C 6 H 12 O 6 ) dissolves in water and not a oil ? is it necessary for all ionic compounds to be soluble in water . Preceding contribs ) 16 : 27, 19 February 2010 ( UTC)
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For homonuclear A A bonds, Linus Pauling took the covalent radius to be half the single-bond length in the element, e . g . " R " ( H & ndash; H, in H 2 ) = 74.14 pm so " r " cov ( H ) = 37.07 pm : in practice, it is usual to obtain an average value from a variety of covalent compounds, although the difference is usually small.
