Periodic Trend: Effective Nuclear Charge Video Lessons

Concept:

Problem: Classify each statement about effective nuclear charge, Zeff, as true or false.In a Be atom, a 1s electron has a greater Zeff than a 2s electron.Across a period, as Zeff increases, atomic size decreases.Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge.A 1s electron is a Be atom has a smaller Zeff than a 1s electron in a Li atom.Effective nuclear charge decreases from left to right across a period on the periodic table.Effective nuclear charge is dependent on the number of electrons present in an atom.

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Let’s analyze each statement

1. In a Be atom, a 1s electron has a greater Zeff than a 2s electron.

Electrons that are farther away from the nucleus have a lower effective nuclear charge

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Problem Details

Classify each statement about effective nuclear charge, Zeff, as true or false.

In a Be atom, a 1s electron has a greater Zeff than a 2s electron.

Across a period, as Zeff increases, atomic size decreases.

Electrons in a p orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge.

A 1s electron is a Be atom has a smaller Zeff than a 1s electron in a Li atom.

Effective nuclear charge decreases from left to right across a period on the periodic table.

Effective nuclear charge is dependent on the number of electrons present in an atom.