Wize University Chemistry Textbook > Periodic Table Trends

Electronegativity

Electronegativity (EN)

Electronegativity is a measure of electron pull. In a bond, the more electronegative element will pull electrons closer towards itself

Example: Draw the bond between H and F and show the difference in electronegativity.

Electronegativity Values

Photo by DMacks / CC BY

The Periodic Trend

Electronegativity increases going up and to the right in the periodic table.

Which atom is the most electronegative? ________

Example: Increasing Electronegativity

Rank the following atoms in increasing electronegativity: O, Al, Sr, N, Si, Cs

Cs < Sr < Al < Si < N < O

Practice: Ranking Electronegativity

Choose the option which correctly ranks the following elements in terms of electronegativity.

Illustration for practice question: Electronegativity Ranking

Ti < Bi < Hg < Cs < Fr

Na < Al < O < S < Cl

Mg < P < C < O < F

Fe < Co < Mo < F < Cl

I don't know

Extra Practice

Periodic Trends: Electronegativity

Which of the following elements would you expect to have the greatest electronegativity?

In, V, Zn, Cl, K

Periodic Trends: Electronegativity

Which is the correct order of decreasing electronegativity for the following elements: $\text{In, Sr, Si, F, Cl}$

Periodic Trends: Electronegativity

Choose the option which shows the following elements from highest electronegativity to lowest?

N Ba P I Se

"The Periodic Table", image retrieved from Chemistry 2e (https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/Chemistry2e-OP_QCzV58S.pdf) by Flowers, P et al., is licensed under CC BY.

Periodic Trends: Electronegativity

Rank the following from lowest to highest electronegativity.

S P Cl As Sb

"The Periodic Table", image retrieved from Chemistry 2e (https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/Chemistry2e-OP_QCzV58S.pdf) by Flowers, P et al., is licensed under CC BY.

Periodic Trends: Electronegativity

Rank the following from least electronegative to most

Ge O F S Cl

"The Periodic Table", image retrieved from Chemistry 2e (https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/Chemistry2e-OP_QCzV58S.pdf) by Flowers, P et al., is licensed under CC BY.

Periodic Trends: Electronegativity

Rank the following from lowest electronegativity to the highest.

S S+ As Te O

"The Periodic Table", image retrieved from Chemistry 2e (https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/Chemistry2e-OP_QCzV58S.pdf) by Flowers, P et al., is licensed under CC BY.

Periodic Trends: Electronegativity

In general, the greater an element’s electronegativity...

Periodic Trends: Electronegativity

Choosing from the following elements answer the following questions. K, Ca, N, Ar, F

Which is the most electronegative?

Periodic Trends: Electronegativity

For an S-O bond, which atom will attract the electrons within the bond more strongly? Why?

Electronegativity

Consider a C-F bond. Which of the following statements correctly describe the electrons within this bond.

Electronegativity

Rank the following atoms in decreasing electronegativity (1 = largest, 5 = smallest).

Electronegativity

Consider a C-O bond. Which of the following statements correctly describe the electrons within this bond.

Periodic Trends: Electronegativity

Choosing from the following elements answer the following questions. K, Ca, N, Ar, F

Which is the most electronegative?

Electronegativity

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