In which of the following compounds does ionic bonding predominate?

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ctensg

Science

Description

In which of the following compounds does ionic bonding predominate?
(a)NH4Cl
(b)CO2
(c)CH4
(d)LiBr

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Explanation & Answer

There are few to none 100% ionic bonds in compounds. When people are talking about ionic bonds they are really talking about bonds with high ionic character. Of the compounds in your list, only CaCl2 and K2O exhibit bonds with relatively high ionic character. Ionic character can be calculated from the electronegativity difference, ΔEN. 

%ionic char. = 100[1 - e^(-ΔEN²/4)] 

Bond .... % ionic character 

N-H .............. 16% 

Ca-Cl ........... 69% 

P-Cl ............. 21% 

K-O ............. 82%



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