MC RW (wk 16)
Enter the maximum number of electrons in each type of sublevel (s, p, d, and f, respectively).
2,6,10,14 An electron in an atom can be raised to a higher energy level by absorbing energy. If the electron falls to a lower energy level, it releases the energy in the form of electromagnetic radiation.
What is the maximum number of electrons that can be contained in the first, second, third, and fourth energy levels, respectively?
2,8,18,32
Classify these relationships between the properties of waves as directly proportional or inversely proportional. energy and frequency frequency and wavelength wavelength and energy
Directly proportional: energy and frequency Inversely proportional: frequency and wavelength wavelength and energy
Rank the following kinds of electromagnetic radiation in order of decreasing wavelength. Red Light, Radio Waves, Microwaves, Infrared Light, Ultraviolet Light, X-rays, Gamma Rays, Violet Light
In order of decreasing wavelength: Radio Waves Microwaves Infrared light Red light Violet light Ultraviolet light X-rays Gamma rays Explanation: The electromagnetic spectrum is a classification of all the electromagnetic waves depending on their wavelength and their frequency. The waves with longest wavelength are radio waves, which have wavelenght that spans from a few mm up to several km. The waves with shortes wavelength are gamma rays, which have wavelength shorter than 10 picometers. More or less at the centre of the electromagnetic spectrum light the visible part of the spectrum, which is usually classified into 7 colors: red, orange, yellow, green, blue, indigo and violet (decreasing wavelength). Red light is the color with longer wavelenght (approx. 750 nanometers), while violet light has the shortest wavelength (approx. 380 nanometers).
How far does light travel in: a) 5 seconds b) 9 days c) 6 years
a) 5 seconds * 3.00 × 10^8 = 1500000000 = 1.5 × 10^9 b) 9 days = 86400 * 9 = 777600 seconds in 9 days 777600 * 3.00 × 10^8 = 2.3 × 10^14 c) 6 years = 1.892 × 10^8 1.892 × 10^8 * 3.00 × 10^8 = 5.7 × 10^16
In the Bohr model, what happens when an electron makes a transition between orbits? a) energy only increases b) energy only decreases c) energy increases or decreases d) energy does not change
c) energy increases or decreases
Aufbau Principle
lower energy orbitals fill before higher energy orbitals.
List two types of electromagnetic radiation with frequencies lower than infrared light.
microwaves, radio waves
Pauli Exclusion Principle
no two electrons can be identified by the same set of quantum numbers (i.e. must have different spins).
Hund's Rule
one electron goes into each until all of them are half full before pairing up.
Four of the wavelengths of the Balmer series occur in the visible spectrum (656 nmnm, 486 nmnm, 434 nmnm, and 410 nmnm). In which region of the electromagnetic spectrum does the fifth line, with a wavelength of 397 nmnm, occur? ultraviolet gamma rays X rays radio waves infrared visible light microwaves
ultraviolet
Arrange the colors of light in the visible spectrum in order of decreasing frequency. red orange yellow green blue indigo violet
violet indigo blue green yellow orange red In the visible spectrum, red light has the longest wavelength, but the lowest frequency and lowest energy. Violet light has the shortest wavelength, but the highest frequency and highest energy. Keep in mind that all colors of light travel at the same speed, 3.0×108 m/s
List the following three types of electromagnetic radiation-visible, gamma rays, and microwaves-in order of decreasing frequency. microwaves visible gamma rays
☆largest☆ gamma rays visible microwaves ☆smallest☆
List the following three types of electromagnetic radiation-visible, gamma rays, and microwaves-in order of decreasing energy per photon. microwaves gamma rays visible
☆largest☆ gamma rays visible microwaves ☆smallest☆ higher frequency = higher energy per photon
List the types of electromagnetic radiation in order of decreasing energy per photon. gamma rays microwaves radio waves visible light
☆largest☆ gamma rays visible light microwaves radio waves ☆smallest☆
List the following three types of electromagnetic radiation-visible, gamma rays, and microwaves-in order of decreasing wavelength.
☆largest☆ microwaves visible gamma rays ☆smallest☆ In order of increasing frequency and decreasing wavelength these are: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.
