Study your flashcards anywhere!
Download the official Cram app for free >
 Shuffle
Toggle OnToggle Off
 Alphabetize
Toggle OnToggle Off
 Front First
Toggle OnToggle Off
 Both Sides
Toggle OnToggle Off
 Read
Toggle OnToggle Off
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
A key: Read text to speech.a key
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
