Apentix/AP Chemistry/Unit 1: Atomic Structure and Properties/Question

AP Chemistrymediummcq1 pt

The effective nuclear charge experienced by a valence electron is:

A.Equal to the atomic number

B.The nuclear charge minus the shielding effect of inner electrons

C.Always zero for transition metals

D.Equal to the mass number

Explanation

Core Concept

Effective nuclear charge (Zeff) = Z - sigma, where Z is the atomic number and sigma represents the shielding constant from inner electrons.

Correct Answer

BThe nuclear charge minus the shielding effect of inner electrons

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