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

Question

Classify each statement about effective nuclear charge. Z_eff, as true or false Effective nuclear charge is dependent on the number of electrons present in an atom. In a Be atom, a 1s electron has a greater Z-eff than a 2s electron. Effective nuclear charge decreases from left to right across a period on the periodic table. Across a period, as Z_eff 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 in a B atom has a smaller Z_eff than a 1s electron in a Be atom.

Explanation / Answer

                      True

                          False

                      True

                          False

1. Effective nuclear charge is dependent on the number of electrons present in an atom
2. In Be atom a Is electron has greater Zeff than a 2s electron
3. Across the period as Zeff increases atomic size decreases

1. Effective nuclear charge decreases from left to right across a period on the periodic table
2. Electrons in a P orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge
3. A 1s electron in a B atom has a smaller Zeff than a 1s electron in a Be atom

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