Which of the following terms indicates the number of bonds that can be formed by an atom?
Oxidation number
Valence
Atomic number
Electronegativity
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The ans is D because it is the electro negativity value that will indicate the number of bond to form when atoms combine.
If the difference in electro negativity is 3.0 that is electrovalent or ionic. Less than that should be covalent bonding...
Valence cannot indicate it cos valence is just the bonding power i.e. ions/electrons free in atoms used for bonding , so therefore it cannot say the type of bond to form.
Why are you people confusing the type of bond with numbers of bond
The nature or type of bond can be predicted by the electronegativity value
Why the the number of bond is determined by the electronic configuration or valence ( recall under organic chemistry the formation of single bond and double bond ) I hope this convince you people
this Question was not detailed
(x*35)+(25*37)
--------------- = 35.5
100
35x + 925 = 35.5*100
35x + 925 = 3550
x = 3550-925
-------- = 75%
35
The answer is D 
Large difference in electronegativity tells us its an ionic bond while little of no difference tells us its a covalent bond
