General Chemistry I Flashcards
In the Bohr Model, what does the Hydrogen electron orbit?
Nucleus
In quantum mechanics, where does the Hydrogen electron exist?
In a spherical probability cloud around the nucleus.
In quantum mechanics, what does the principle quantum number, n, define?
The principle quantum number, n, defines what shell the electron is in.
n values start from one: 1,2,3 …etc.
As the principle quantum number, n, increases, the energy [increases/decreases].
increases
Only if subshells are the same.
How many electrons per orbital?
Two electrons.
How many orbitals are there per shell?
n2
How many electrons per shell?
2n2
Electrons are naturally found in which state?
Ground State
To which state does an electron move when it absorbs energy?
Excited State
Which is higher in energy, the excited states or the ground state?
Excited States
Energy is ______ when a electron moves from excited to ground state.
released
Define:
Absorption Spectrum
The electromagnetic spectrum, broken by a specific pattern of dark lines or bands, observed when radiation traverses a particular absorbing medium. The absorption pattern is unique and can be used to identify the material.
Example of Chlorophyll Absorption Spectrum
Define:
Emission Spectrum
The spectrum of bright lines, bands, or continuous radiation characteristic of and determined by a specific emitting substance subjected to a specific kind of excitation.
Emission Spectrum of Different Elements
In quantum mechanics, how many orbitals can be found in the s shell?
One orbital.
In quantum mechanics, how many orbitals can be found in the p shell?
Three orbitals.
In quantum mechanics, how many orbitals can be found in the d shell?
Five orbitals.
In quantum mechanics, how many orbitals can be found in the f shell?
Seven orbitals.
In quantum mechanics, what does l symbolize?
l is the angular momentum quantum number. l ranges from 0 to n-1.
l=0,1,2,3 for s,p,d,f respectively.
In quantum mechanics,what do the letters s,p,d,f symbolize?
The letters s,p,d,f symbolize the subshells.
In quantum mechanics, what is the maximum number of electrons found in an orbital?
Two electrons
In quantum mechanics, for a given shell, higher subshells have [higher/lower] energy.
higher
In quantum mechanics,what does the letter m signify?
The letter m signify’s the magnetic quantum number.
m ranges from -1 to 1, including 0.
In quantum mechanics, what does the letter s signify?
The letter s signify’s the spin quantum number.
s is either -1/2 or 1/2.
What are the common names and geometric shapes for orbitals s, p, d?