Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
how many quantum numbers are used to describe the energy state of an electron in an atom
|
4
|
|
|
a spherical electron cloud surroudning an atomic nucleus would best repersent
|
an s orbital
|
|
|
an energy level of n=4 can hold _______- electrons
|
32
|
|
|
en energy level of n=2 can hold _____ electrons
|
8
|
|
|
an electron for which n=4 has more ___ than an electron for which n=2
|
energy
|
|
|
the modern model of the atom that treates electrons as waves
|
quantum mechanical model of the atom
|
|
|
states that it is impossible to know both the velocity and the position of a particle at the same time
|
Heisenbery uncertainty principle
|
|
|
a three dimensinal region around the nucleus representnig the probabiliyy of finding an electron
|
atomic orbital
|
|
|
originally applied ot the hydrogen atom, it led to the quantum mechanical model of the atom
|
Schrodinger wave equation
|
|
|
atomic orbitals ________ have an exactly defined size
|
do not
|
|
|
each orbital may contain at most _____ electrons
|
two
|
|
|
all s orbitals are _____
|
spherically shaped
|
|
|
a principal enenrgy has __ energy sublevels
|
n
|
|
|
the maximum number of _ related to each principal energy level equals 2n2
|
electrons
|
|
|
there are __ equal energy p orbital
|
three
|
|
|
hydroven's principal energy level 2 consists of __ orbitals
|
2s and 2p
|
|
|
hydroven's principal energy level 3 consists of _____ orbitals
|
nine
|
|
|
the bending of a wave as it passes by t he edge of an object is called
|
diffraction
|
|
|
when waves overpal each other ____ occurs
|
interferance
|
|
|
the wave properties of electrons and other very small particles are described mathematically by
|
quantum theory
|
|
|
an orbtal, a three dimensiaonal region aroundt he nucleus indicates
|
the probable location of an electron
|
|
|
wave functions give only the probability of finding an electron at a given place around the nucleus
|
true
|
|
|
what are quantum numbers
|
numbers that specify the properties of atomic orbitals and the properties of electrons in orbits
|
|
|
principal quantum #
|
n, main enrgy levels surrounding nucleus
|
|
|
angular momentum number
|
l, shape of an orbital
|
|
|
magnetic quantum number
|
m, orientation of an orbital about teh nucleus
|
|
|
what does the spin number indicate
|
+1/2, -1/2 the two possible states of an electron orbital
|
