Photoelectron Spectroscopy Concepts

Photoelectron Spectroscopy Concepts

Assessment

Interactive Video

Physics, Chemistry, Science

9th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video introduces photoelectron spectroscopy (PES), explaining how it measures the energy required to remove electrons from atoms, providing evidence for the quantum mechanical model and electron configurations. The process involves using x-rays to eject electrons, with the resulting data displayed as graphs showing energy levels. The video analyzes these graphs, comparing PES data for elements like lithium, boron, hydrogen, helium, and calcium, highlighting differences in electron removal energy due to nuclear proximity and proton count.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary goal of photoelectron spectroscopy (PES)?

To calculate the charge of electrons

To measure the energy required to remove electrons

To determine the speed of electrons

To measure the mass of electrons

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In PES, what is used to remove electrons from a sample?

Ultraviolet light

X-rays

Gamma rays

Microwaves

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a tall peak in a PES graph indicate?

A large number of electrons removed at that energy

High energy required to remove electrons

Low energy required to remove electrons

A small number of electrons removed at that energy

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a PES graph, what does the x-axis represent?

Binding energy

Number of electrons

Atomic mass

Electron speed

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which electrons are typically represented by the peak furthest to the left in a PES graph?

3s electrons

1s electrons

2p electrons

Valence electrons

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the electron configuration for lithium as determined by PES data?

1s2 2p1

1s1 2p2

1s1 2s2

1s2 2s1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which element's PES data would show a configuration of 1s2 2s2 2p6 3s2 3p6 4s2?

Calcium

Sodium

Potassium

Magnesium

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