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Periodic Trends: Effective Nuclear Charge

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Wize University Chemistry Textbook > Periodic Table Trends

Effective Nuclear Charge (Zeff)

3 Activities

What is the approximate effective nuclear charge for Al?


"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.
More Effective Nuclear Charge (Zeff) Questions:
Overall concept testing
Choose the incorrect statement:
The Zeff for Cl is:
Atomic Radius
Calculate the effective nuclear charge (Zeff) for the following atoms.
Periodic Trends: Effective Nuclear Charge
What is the effective nuclear charge of Tellurium?
Periodic Trends: Effective Nuclear Charge
Calculate the approximate effective nuclear charge of 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: Z Effective
What is the Zeff on an electron in the valence shell of Mg?
Periodic Trends: Z Effective
Which of the following periodic properties increases with the increase in effective nuclear charge across a period?
i. Ionization energy
ii. Electron affinity
Periodic Trends: Effective nuclear charge
What is the most likely value for the Zeff of an electron in the valence shell of Mg?
Atom: Atomic Properties
Students in a previous year were asked a certain set of questions. For each of the questions and the given responses, in the corresponding boxes, identify whether the student response is correct or incorrect and the corrections that need to be made.
a) Question: IE for O = 1310 kJ/mol and IE for Cl = 1250 kJ/mol. Explain why this difference exists.
Student’s response: Because Cl has a higher n-value the electrons are further from the nucleus, giving the atom more room and the ability to add additional electron(s).
Periodic Trends: Practice
Complete the statements below by filling in the blanks and then choose which option below would help explain your answer.
Periodic Trend: Z effective
The Zeff for Cl is: