test 1 Flashcards
Orange light has a frequency of 4.8 x 1014 Hz. What is the energy of one photon of orange light?
E = (6.63x10 −34)(4.8x10 14) =
h=
planks constant
v=
frequency
λ=
wavelength
c=
speed of light
equation e=
hv
equation c=
λ v
How many electrons are permitted in any one orbital? What is the name of the rule that defines this number?
2e pauli exclusion
the _______ decribes the shape of the electron cloud or orbital
sublevel
The energy level describes the ____ of the electron cloud or orbital
size
Heisenberg uncertainty principal states
that it is impossible to know both the position and velocity of a particle at the same time
the three dimensional region around the nucleus represententing the probability of finding an electron is called a
orbital
energy is emitted and abosrbed by atoms in discrete amounts called
quantum
If an electron in an atom absorbs energy, it can move from a ____ to a ________ energy level
lower, higher
The set of frequencies produced by an excited state atom is called its _____spectrum
atomic
The lowest allowable energy state of an atom is called its ______ state
ground
what color has a greater energy red or blue
blue
Red light has a longer wavelength then blue light.which color has a greater frequency
blue
what is the unit of measurement used for energy
joule
what wave characterisitic determines the energy of a light wave
frequency
the ____ is the phenomenon in which electrons are emitted from a metals surface when light of a certain frequency shines on it
photoelectric effect
a ____ is the minimum amount of energy that can be lost or gained by an atom
quantum
when an atom emits light photons certian energies are being emitted true or false
true
the lowest energy state of an electron is the ground state true or false
true
atomic emission spectra can be explained by the wave model of light true or false
false
the fact that only certain colors appear in an elemtns atomic emission spectrum indicates that only certain frequencies of light are emitted true or false
true
A flame test can be used to identigy the presence of certain elements in a compound true or false
true
each element has a unique atomic emission spectrum true or false
True
Like the visible spectrum, an atomic emission spectrum is a continous range of colors true or false
false
plancks discovery
identified a relationship between the energy and frequency of light
de brogolies discovery
hypothesized that matter has wave characterisitics
The metric unit for frequency is the _____, which is equivalent to one wave per second
Hertz
Schodinger discovered
developed a set of equations that described the electron wave position in an atom and its energy
_____ is the number of waves that pass a given point in once second
Frequency
The shortest distance bewteen equivlant points on a continous wave is called a
wavelength
_____ is one type of electromagnetic radiation. Other example include X-rays, radio waves, and microwaves
light
Angular Momentum Quantum Number
sublevel and the shape
principal quatnum number
energy level and the size
No two electrons in the same atom can have
the same set of four quantum numbers
Each electron in an atom has a set of four numbers, called _____ _____, that describe it completely
quantam numbers
orbital size increase as the
energy level increases
____ _____ have space around the nucleus are called atomic orbitals. (electron density clouds)
probable reigons
Heisenberg’s Uncertainty Principle
The more accurately the electron position is known, the more error there is in measuring its momentum and vice-versa.
All waves can be characterized by their wavelength, amptitude, frequency, and ____
speed
Electro magnetic radiation is a kind of _____ that behaves like a _____ as it travels through space
energy, wave
Aufbau Order
Electrons fill orbitals of lowest energy before filling high energy orbitals
Hund’s Rule
Electrons fill degenerate orbital sets so that one electron goes into each degenerate orbital before pairing occurs
Pauli Exclusion Principle
Each electron has a unique set of 4 quantum numbers therefore…Only 2 electrons can share any one orbital and they will have opposite spins
Spin Quantum Number
Electro spin
Magnetic Quantum Number
Describes one specific orbital position
Atomic Orbitals
are the three-dimensional spaces where an
Schrödinger’s Equations
Predict the probable location of an electron around the nucleus.
De brogolies hypothesis
If waves (like light) have particle properties, particles (like electrons) should have wave properties
