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

AP Chemistrymediummcq1 pt

A PES peak for an element is twice as tall as its other peaks. What does the taller peak indicate?

A.Twice as many electrons in that subshell

B.Electrons twice as far from the nucleus

C.A subshell with double the binding energy

D.Twice as many isotopes

Explanation

Core Concept

Each ejected electron gives one count, so peak height is proportional to the number of electrons in the subshell. A peak twice as tall holds twice the electrons of the comparison peak.

Correct Answer

ATwice as many electrons in that subshell

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