Exam 2 Lecture 7 Flashcards by Justin Tirrell | Brainscape

Q

The deBroglie wavelength of matter The deBroglie wavelength of matte

A

h=6.62607004 × 10^-34 m² kg / s

lower case v is “velocity”

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Q

Who is this guy?

What did he discover?

A

Werner Heisenberg

The dual nature of matter (a particle and a wave) places limitations on the preciseness with which we can know both the location and the momentum (mass x velocity) of an object

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Q

IF you can Know location precisely,

A

then momentum is uncertain

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Q

If you can Know momentum precisely,

A

then location is uncertain

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Q

Earth Wavelength

A

miniscule

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Q

baseball wavelength

A

moderate

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Q

electron wavelength

A

relatively moderate

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Q

Who is this guy?

What does he say about electrons?

A

Erwin Schrodinger

The behavior of the electron is better described b y g focusin g on it’s wavelike p p ro perties

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Q

An orbit:

A

a defined, known pathway

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Q

An orbital:

A

a probability function; “the probability that the probability that an electron will be found in a given location”

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Q

An orbital: A description of….

A

the distribution of electron density in space

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Q

Orbitals have a characteristic ……

A

shape and energy

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Q

What do the dots represent?

A

Each dot represents a position where an electron may be found at any given moment with respect to the nucleus, which is at the center of the axes

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Q

Orbitals of a given shape (within a subshell)….

A

have a specific orientation in space

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Q

Orbital quantum numbers

A

n, l, m_l, m_s

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Q

n lables…

A

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Q

n possible values…

A

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Q

n notes

A

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Q

n name

A

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Q

l name

A

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Q

m_l name

A

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Q

m_l labels….

A

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Q

m_l possible values

A

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Q

m_l notes

A

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Q

l labels….

A

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l possible values….

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Q

l notes….

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Q

m_s name

A

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Q

m_s labels…

A

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Q

m_s possible values…

A

Q

m_s notes…

A

Q

n describes the….

A

energy of the orbital of the orbital

n=1,2,3,4 “shells”

Q

l describes the…

A

3-dimensional shape of the orbital

(subshells)

Q

m_l describes the

A

orientation of an orbital in space

(values are integers from “- l” to “ + l”)

Q

A specific orbital is defined by

A

specific and unique values for n, l, and m_l

Q

Quantum numbers for n=1 orbital

A

Q

Quantum numbers for n=2 orbitals

A

Q

sherical

A

Q

Elipsoid

A

Q

2p orbital

m_l=1

spacial orientation

A

along the x axis

Q

2p orbital

m_l=0

spacial orientation

A

along the z axis

Q

2p orbital

m_l=-1

spacial orientation

A

along the y axis

Q

n refers to the ____ of the ____

A

Q

l refers to the ____ of the ____

A

Q

m_l refers to the ____ of the ____

A

Q

define node

A

a point at which a harmonic function has the value zero, especially a point of zero electron density in an orbital.

Q

n=3 orbitals quantum numbers

A

Q

Allowed values for l

A

integers from 0 to n 1

Q

•Allowed values for m_l

A

integers from -l to +l

Q

How many orbitals are there in n=3?

A

Q

Pears

A

Q

2 pears to one torus

A

Q

shape of s orbital

A

spherical

Q

shape of p orbital

A

dumbell (elipsoid)

Q

shape of d orbitals

A

pear and toris

Q

d orbital spacial orientation

A

Q

What are those?

A

Q

n=4 orbital quantum numbers

A

Q

How many orbitals in n=4?

A

Q

Shapes of f orbitals

A

Intense

Q

A

Q

Subshell names: n=1

A

Q

Subshell names: n=2

A

Q

Subshell names: n=3

A

Q

Subshell names: n=4

A

Q

Subshell names: n=5

A

Q

number of orbitals in s

A

Q

number of orbitals in p

A

Q

number of orbitals in d

A

Q

number of orbitals in f

A

Q

Name Irregular Electron Configurations in periods 4 and 5

A

Cr, Cu, Mo, Ag

1

Q

Explain what is Cr’s electron configuration?
Why is it different?

A

migh predict: [Ar]4s²3d⁴

actually: [AR]4s¹3d⁵
Cr would rather have a full spin party than a ful s orbital.

Q

Explain what is Cu’s electron configuration?
Why is it different?

A

migh predict: [Ar]4s²3d⁹

actually: [AR]4s¹3d¹⁰
Cr would rather have a full spin party than a full s orbital.