NMR Levels2

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From users who are members of CHY1201 - Spectroscopy :

Nick Walker

said

Ready to use

6 years, 1 month ago

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Nick Walker 5 years, 11 months ago

Published this.

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Nick Walker 6 years, 1 month ago

Gave some feedback: Ready to use

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Nick Walker 6 years, 1 month ago

Created this as a copy of NMR frequency.

Name	Status	Author	Last Modified
NMR frequency	Ready to use	Nick Walker	15/11/2024 18:49
NMR field	Ready to use	Nick Walker	15/11/2024 18:49
NMR Levels2	Ready to use	Nick Walker	20/01/2020 12:59
ESR frequency	Ready to use	Nick Walker	15/11/2024 18:50
ESR g factor	Ready to use	Nick Walker	15/11/2024 18:52

There are 7 other versions that do you not have access to.

Question statement

Give any introductory information the student needs.

			Name	Type	Generated Value

gyromag	list	List of 9 items
randomiser	integer	1
Spin_select	number	0.5
levels	number	2
Nucleus_select	string	13C
gyromag_select	number	67.3
html_out		Expression can't be evaluated -- missing an operator.
html		Error computing referenced variable `html_out`
level_labels	list	List of 9 items
labels	list	[ -0.5, 0.5 ]

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
[
  {"Nucleus":"1H","Spin":0.5,"gyromagnetic ratio":267.5},
  {"Nucleus":"13C","Spin":0.5,"gyromagnetic ratio":67.3},
  {"Nucleus":"14N","Spin":1,"gyromagnetic ratio":19.3},
  {"Nucleus":"19F","Spin":0.5,"gyromagnetic ratio":251.7},
  {"Nucleus":"31P","Spin":0.5,"gyromagnetic ratio":"Null"},
  {"Nucleus":"33S","Spin":1.5,"gyromagnetic ratio":"Null"},
  {"Nucleus":"59Co","Spin":3.5,"gyromagnetic ratio":"Null"},
  {"Nucleus":"87Sr","Spin":4.5,"gyromagnetic ratio":"Null"},
  {"Nucleus":"101Ru","Spin":2.5,"gyromagnetic ratio":"Null"} 
]

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `list`

[ [ "Nucleus": safe("1H"), "Spin": 0.5, "gyromagnetic ratio": 267.5 ], [ "Nucleus": safe("13C"), "Spin": 0.5, "gyromagnetic ratio": 67.3 ], [ "Nucleus": safe("14N"), "Spin": 1, "gyromagnetic ratio": 19.3 ], [ "Nucleus": safe("19F"), "Spin": 0.5, "gyromagnetic ratio": 251.7 ], [ "Nucleus": safe("31P"), "Spin": 0.5, "gyromagnetic ratio": safe("Null") ], [ "Nucleus": safe("33S"), "Spin": 1.5, "gyromagnetic ratio": safe("Null") ], [ "Nucleus": safe("59Co"), "Spin": 3.5, "gyromagnetic ratio": safe("Null") ], [ "Nucleus": safe("87Sr"), "Spin": 4.5, "gyromagnetic ratio": safe("Null") ], [ "Nucleus": safe("101Ru"), "Spin": 2.5, "gyromagnetic ratio": safe("Null") ] ]

This variable doesn't seem to be used anywhere.

Advice

(i) First, retrieve the correct value of the nuclear spin for a {Nucleus_select} nucleus.

The number of levels is given by;

${\rm~number~of~levels}=2I+1$

so;

$(2~\times~\var{Spin_select})+1=\var{levels}$

(ii) The m_I quantum number represents the projection of the nuclear spin vector onto the z axis and can take values as follows for any given nucleus;

$m_{I}=-I,-I+1,-I+2,...I$

so the answer for {Nucleus_select} is;

{labels}

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Number entry
Number entry		Hasn't run yet
List of numbers
List of numbers		Hasn't run yet

This question is used in the following exam:

NMR and ESR by Nick Walker in Nick's workspace.

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Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Nick Walker 5 years, 11 months ago

Nick Walker 6 years, 1 month ago

Nick Walker 6 years, 1 month ago

Error in variable testing condition

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Generated value: `list`

Parts

Number entry

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NMR Levels2

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Nick Walker 5 years, 11 months ago

Nick Walker 6 years, 1 month ago

Nick Walker 6 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: list

Parts

Number entry

Advanced settings

Generated value: `list`