Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

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

image

Play button

image

Play button

image

Progress

1/56

Click to flip

56 Cards in this Set

  • Front
  • Back
The lowest allowable energy state of an atom is called its
ground state
Bohr's model of the atom predicted the
frequencies
THe smaller an electrons orbit the ______ the atoms energy level
lower
The larger an electron's orbit the ______ the atom's energy level
higher
When energy is added to a hydrogen atom it's _________ moves to a higher-energy orbit
electron
What is Heisenberg uncertainty principle?
States that it is impossible to know both the velocity and position of a particle at the same time
What is Schrodinger wave equation?
It led to the quantum mechanical model of the atom.
Each orbital may contain____electrons
two
All s orbitals are
spherically shaped
There are _____ equal energy p orbitals.
3
What is the electron configuration?
The arrangement of electrons in an atom.
THe arrangement of electrons is the most stable stable arrangement is called the atom's
groundstate electron configuration
THe Pauli exclusion principle states that
a maximum of two electrons may occupy a single atomic orbital
Hund's rule states
that single electrons with the same spin must occupyeach equal energy orbital before additional electrons with opposite spins occupy the same orbital,
What is the noble-gas notation
Uses bracketed symbol nearest preceding noble gas atom in the periodic table.
The electrons in the most outermost orbitals are called
valance electrons
What is the law of octaves?
the properties of the elements repeated every eight elements.
THe first periodic table was created by
Dmitri Mendeleev
In Mendeleev's periodic table elements were in order from
increasing atomic mass
Who arranged the periodic table a second time?
Henery Mosley
How did Mosley organize the periodic table?
In increasing atomic number
What is a column in the periodic table
GROUP
What is a row in the periodic table
period
Group A elements
transition metals
elements that conduct energy
metals
Group B elements
transition metals
THere are ___ main classifications of elements
three
Into many blocks is the periodic table divided?
four
How many d blocks are there?
40
What is ionization energy?
the energy required to remove an electron from a gaseous atom.
What does the electronegativity of an element indicate?
indicates its atoms ability to attract electrons in a chemical bond.
What do all elements in a group have in common?
THe share the same # of valance elec.
Alkali metals are
shiny gray solids, soft enough to be cut with a knife
Alakline earth metals form ions with a ____ charge
2+
The P-block contains
metals, metalloids, nonmetals, noble gases
___ is the most abundant element in the earths crust
Aluminum
Plants and animals get the nitrogen they need from
nitrogen-fixing bacteria
Ozone is
an allotrope of oxygen
How can a metal be a temparary magnet?
When there is an unpaired electron in in the valance orbital of a metal atom or ion
needed for the development of red blood cells
cobalt
The best conductor of electricity
silver
Atomic Radius is
The size of the atom
Atoms get ___ when moving down the periodic table
bigger
Atoms get ___ when moving across the periodic table
smaller
S orbial holds ____ pairs of electrons
1
P orbial holds ____ pairs of electrons
3
D orbial holds ____ pairs of electrons
5
F orbial holds ____ pairs of electrons
7
Alkaline earth metals
somewhat soft,
less reactive than Alkali metals,
Transition Metals
Most gray, hard, and dense
less reactive than Alkaline earth metals
Other Metals
Softer than transition metals,
gray and malleble
less reactive than most metals
Metaloids
Properties between those of metals and Non-metals
Halogens
Very reactive
can form a compound with almost all metals
commonly used as cleaners
Noble Gases
colorless odorless gasses at room temp.
chemically inert
other non-metals
Life elements
light, non-metallic
poor conductors of heat and elec.
Lanthanides and Actinides
Rare earth metals
most reactive