Chapter 4 Electron ArrangementChapter 4 Electron Arrangement

Write the Bohr Model for Barium

2, 8, 18, 18, 8, 2

Write the Orbital Notation for Aluminum

Write the Electron Configuration for Bismuth

Write the Electron Configuration for Bismuth

•1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3

•1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3

Write the Noble Gas Shorthand Notation for Tin.

•[Kr] 5s2 4d10 5p2

Write the Lewis Dot Structure for Sulfur

Draw the Bohr Model of Bromine

2, 8, 17, 7

Write the electron configuration for Iron

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d7

Write the Noble Gas Shorthand Notation for Vanadium

•[Ar] 4s2 3d3

Write the Orbital Notation for Iridium

Write the Lewis Dot Structure for SiliconWrite the Lewis Dot Structure for Silicon

Write the Noble Gas Shorthand Notation for Lead

[Xe] 6s2 4f14 5d10 6p2

Write the Electron Configuration for Polonium

Write the Electron Configuration for Polonium

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5

d10 6p4

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5

d10 6p4

Write the Lewis Dot Structure for Cs (Cesium)

Draw the Bohr Model for Zinc

Write the Orbital Notation for Oxygen

Write the Orbital Notation for Oxygen

How are wavelength and frequency related?

They are inversely proportional. As one increase the other decreases

For electromagnetic radiation, what does c (the speed of light) equal?

• The wavelength times the frequency.

How is frequency related to the energy of a wave?

• They are directly proportional. Waves with high frequency also possess high energy.

What is defined as the distance between corresponding points on adjacent waves?

Wavelength

How is frequency defined?

The number of waves that pass a given point over a specific period of time.

What units are used to measure frequency?

Hertz (Hz) (waves/sec.)

What is “ground state” for an atom?

When the electrons in an atom occupy their lowest energy levels possible.

What is the “excited state” of an atom?

When the electrons in an atom have absorbed energy and moved up to higher energy levels.

What quantum number indicates the major shell or energy level of an electron?

Principle Quantum Number

What is defined as a region in an atom where there is a high probability of finding an electron?

ORBITAL

What quantum number denotes the shape or subshell in which the electron is located?

Angular Momentum Quantum Number

What is the shape of an “s” orbital

SPHERICAL

What is the shape of a “p” orbital?

Dumbbell or

Ellipsoid

What quantum number tells the axes in space of the electron?

Magnetic Quantum Number

What quantum number tells the direction of an electron’s

spin?

Spin Quantum Number

What orbital shapes can be found in each of the first four energy levels?

1st Energy Level = s orbital 2nd Energy Level = s and p orbitals 3rd Energy Level = s, p, and d orbitals 4th Energy Level s, p, d, and f orbitals

2n2

What formula helps to determine the maximum number of electrons that can be contained per energy level?

How many orbitals are in the n = 4 shell? a. 4 b. 8 c. 12 d. 16

16

4

How many electrons in an atom could be described by the quantum numbers n = 3 and

ml = -1? a. 2 b. 4 c. 10 d.18

n = -2

Which of the following in not an acceptable set of quantum number for an electron in an

atom?

a. n = 1, l = 0, m = 0, s = +½ b. n = 4, l = 3, m = -2, s = -½ c. n = -2, l = 1, m = -1, s = +½ d. n = 3, l = 1, m = 0, s = -½

If electromagnetic radiation A has a lower frequency

than electromagnetic radiation B, then compared to B, the wavelength of A is

______________

LONGER

How many quantum numbers are needed to describe the energy state of an electron in an atom?

4

How many electrons are needed to fill each of the first four energy levels?

1st Energy Level = 2 electrons 2nd Energy Level = 8 electrons 3rd Energy Level = 18 electrons 4th Energy Level = 32 electrons

What are the colors of the visible spectrum from increasing wavelength

to decreasing wavelength?

Red, Orange, Yellow, Green, Blue, Indigo, Violet

What requires that electrons enter each orbital one at a time and with identical spins before any pairing can occur?

Hund’s Rule

What states that no two electrons in an atom can have exactly the same set of four quantum numbers?

Pauli’s Exclusion Principle

What is an octet?

An atom that has 8 outer shell electrons

Using the two equations, E = h and c = , derive an equation using E in terms of h, c and .

Then prove it.

E = h c =

Step 1: Solve for V

V = C

E = h(C/ )Step 2: Plug in v for v

Kg * m2 s2

= Kg * m2 * s * s2

m____ s * m

E h C

The End!The End!The End!The End!The End!The End!