Chemistry Ch 7 quiz

Which of the following statements is TRUE?

- Part of the Bohr model proposed that electrons in the hydrogen atom are located in "stationary states" or particular orbits around the nucleus. - An orbital is the volume in which we are most likely to find an electron. - The emission spectrum of a particular element is always the same and can be used to identify the element. - The uncertainty principle states that we can never know both the exact location and speed of an electron. - All of the above are true

Give the numbers for ml for a p orbital.

-1, 0, 1

Determine the energy change associated with the transition from n=3 to n=2 in the hydrogen atom.

-3.03 × 10-19 J

For n = 3, what are the possible sublevels?

0, 1, 2

Give the value of l for a 3p sublevel.

1

Calculate the wavelength of a baseball (m = 155 g) moving at 32.5 m/s.

1.32 × 10-34 m

Calculate the wavelength of light associated with the transition from n=1 to n=3 in the hydrogen atom.

103 nm

Match the values in the left column to the appropriate blanks on the right. Make certain each blank is filled before submitting your answer. n=3 to n=1

103 nm

Match the values in the left column to the appropriate blanks on the right. Make certain each blank is filled before submitting your answer. n=1 to n=2

122 nm

Match the values in the left column to the appropriate blanks on the right. Make certain each blank is filled before submitting your answer. n=5 to n=3

1280 nm

What value of l is represented by a d orbital?

2

An FM radio station broadcasts electromagnetic radiation at a frequency of 100.6 MHz. The wavelength of this radiation is ________ m.

2.982

Determine the mass of a ball with a velocity of 35.0 m/s and a wavelength of 8.92 x 10-34 m.

21.2 g

In which orbital below would an electron (on average) be closest to the nucleus?

2s

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 690 nm.

4.35 × 1014 s-1

How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy?

4.99 × 1023 photons

In which orbital below would an electron (on average) be farthest from the nucleus?

4f

Match the values in the left column to the appropriate blanks on the right. Make certain each blank is filled before submitting your answer. n=2 to n=3

657 nm

Match the values in the left column to the appropriate blanks on the right. Make certain each blank is filled before submitting your answer. n=6 to n=5

7460 nm

Which of the following statements is TRUE?

Atoms are roughly spherical because when all of the different shaped orbitals are overlapped, they take on a spherical shape.

The vertical height of a wave is called

amplitude

Which of the following quantum numbers describes the shape of an orbital?

angular momentum quantum number

Which of the following visible colors of light has the highest frequency?

blue

When waves of equal amplitude from two sources are in phase when they interact, it is called ________.

constructive interference

When waves of equal amplitude from two sources are out of phase when they interact, it is called ________.

destructive interference

The number of cycles that pass through a stationary point per unit time is called

frequency

On the electromagnetic spectrum, visible light is immediately between two other wavelengths. Name them.

infrared and ultraviolet

Which of the following quantum numbers describes the orientation of an orbital?

magnetic quantum number

Choose the transition (in a hydrogen atom) below that represents the absorption of the shortest wavelength photon.

n = 1 to n = 2

Which of the following types of electromagnetic radiation has the lowest frequency?

orange

Which of the following quantum numbers describes the size and energy of an orbital?

principal quantum number

Identify the color of a flame test for lithium.

red

Which of the following visible colors of light has the longest wavelength?

red

Which of the following occur as the wavelength of a photon increases?

the frequency decreases

Identify the color of a flame test for potassium.

violet

Which of the following colors of electromagnetic radiation has the shortest wavelength?

violet

The distance between adjacent crests is called

wavelength

Place the following types of electromagnetic radiation in order of increasing wavelength. visible light x-rays microwaves

x-rays < visible light < microwaves

Identify the color of a flame test for sodium.

yellow