Q: Which of the following sources of electromagnetic radiation will have the highest frequency?

Visible Light (\nu = 4.11 \times $$10^{15}$$ \text{ s}^{-1})

Question 1

Which of the following statements best describes the relationship between wavelength and frequency for electromagnetic waves?

Accepted Answer

Wavelength and frequency are inversely proportional.

Question 2

A neon sign emits red light with a wavelength of 663.8 nm. What is the frequency of this light? (Speed of light $$c = 3.00 	imes 10^8$ m/s)

Accepted Answer

$$4.52 	imes 10$$^{14}$$ Hz

Question 3

Which of the following electromagnetic waves has the highest frequency?

Accepted Answer

Wave C (325 nm)

Question 4

Calculate the energy of a photon with a frequency of $$6.88 	imes 10$$^{14}$$ Hz. (Planck's constant h = 6.626$$ 	imes $$10^{-34} J$$·s)

Accepted Answer

$$4.56 	imes 10$$^{-19}$$ J

Question 5

Which region of the electromagnetic spectrum does a frequency of $$6.0 	imes 10$$^{12}$$ s$$^{-1}$$ correspond to?

Accepted Answer

Microwave

Question 6

A photon with a wavelength of 320 nm strikes a metal surface and an electron is emitted with a kinetic energy of $$3.0 	imes 10$$^{-2}$$ eV. What is the binding energy of the electron in kJ/mol? (1$ eV = 1.602$$ 	imes $$10^{-19} J$$, $$N_A = 6.022 	imes 10$$^{23}$$ mol$$^{-1}$$)

Accepted Answer

595 kJ/mol

Question 7

According to the de Broglie wavelength formula, how does the wavelength of a moving object change as its velocity increases?

Accepted Answer

The wavelength decreases.

Question 8

Which of the following best describes the Heisenberg Uncertainty Principle?

Accepted Answer

The position and momentum of an electron cannot both be precisely measured at the same time.

Question 9

Which electron transition in a hydrogen atom represents emission of the shortest wavelength?

Accepted Answer

n = 3 to n = 1

Question 10

How many different values of the magnetic quantum number $$m_l$$ are possible for a 4d set of orbitals?

Accepted Answer

5

Question 11

Which of the following set of quantum numbers is possible for an electron in a set of 6f orbitals?

Accepted Answer

n = 6, l = 3, ml = 0, ms = +1/2

Question 12

How many electrons can be found in the 7th shell of an atom?

Accepted Answer

98

Question 13

Which of the following statements is FALSE?

Accepted Answer

The second shell of an atom possesses d orbitals.

Question 14

What is the maximum number of electrons that can occupy a single f subshell?

Accepted Answer

14

Question 15

Which quantum number describes the shape of an atomic orbital?

Accepted Answer

Angular momentum quantum number (l)

Question 16

Which of the following transitions represents absorption with the greatest frequency?

Accepted Answer

n = 1 to n = 3

Question 17

Which of the following sources of electromagnetic radiation will have the highest frequency?

Accepted Answer

Visible Light (
u = 4.11 	imes $$10^{15}$$ 	ext{ s}^{-1})

Question 18

Which quantum number is associated with the orientation of an orbital in space?

Accepted Answer

Magnetic quantum number (ml)

Question 19

What is the value of the principal quantum number n for the 3rd shell?

Accepted Answer

n = 3

Question 20

Which of the following is the correct formula for the energy of a photon in terms of its frequency?

Accepted Answer

$$E = h 
u$$

Quantum-Mechanical Model of the Atom: Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard