Electronegativity vs electrochemical series

In summary, carbon is higher in the electrochemical series than hydrogen, which suggests it is more electropositive. However, when looking at Pauling values, carbon actually appears to be more electronegative than hydrogen. This may seem contradictory, but it is important to note that these are two different scales and cannot be directly compared. Additionally, the Eo value for carbon is not readily available, making it difficult to determine its exact reactivity. This can also be seen in the example of lithium and potassium, where lithium is less reactive but has a higher Eo value.
  • #1
Miffymycat
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Carbon is higher in the electrochemical series than hydrogen, which indicates it is more electropositive, but Pauling values show carbon as more electronegative - 2.55 vs 2.2!?

Any reason / explanation for the apparent contradiction? Tried looking for an Eo value for C (should be more negative then -0.76V) but no joy ...

Come to that, Li is less reactive than K, but has a greater Eo ...

Thanks in advance for any replies
 
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  • #2
Miffymycat said:
Carbon is higher in the electrochemical series than hydrogen, which indicates it is more electropositive

This is comparing apples and oranges. There exist some slight correlation, but these are separate scales.
 

What is electronegativity?

Electronegativity is a measure of an atom's ability to attract electrons towards itself in a chemical bond.

What is the electrochemical series?

The electrochemical series is a list of elements in order of their tendency to gain or lose electrons in a chemical reaction.

How are electronegativity and the electrochemical series related?

Electronegativity is one of the factors that determines an element's position in the electrochemical series. Elements with higher electronegativity tend to be more reactive and have a higher tendency to gain or lose electrons.

Which is more important, electronegativity or the electrochemical series?

Both electronegativity and the electrochemical series are important concepts in chemistry. Electronegativity is a fundamental property of individual atoms, while the electrochemical series helps us understand the reactivity of elements and predict the outcome of chemical reactions.

How can electronegativity and the electrochemical series be used in practical applications?

Electronegativity and the electrochemical series are important in various fields such as materials science, biochemistry, and environmental chemistry. They can be used to explain and predict the behavior of different elements and compounds in chemical reactions and to design new materials with specific properties.

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