Atoms Flashcards
Atoms
Smallest unit of an element that retains said element’s chemical properties.
What are the names and charges of the 3 subatomic particles?
Electrons- Negative
Protons- Positive
Neutrons- Neutral
How can you figure out the number of energy levels an element has?
Use the periodic table.
Find the element, then look to the left at the number row your element is in. This tells you the number of electron orbitals the element’s atoms have.
How do you create Bohr’s diagrams?
Center: Chem. Symbol, atomic #, # of neutrons
Surrounding middle: Electron orbitals.
Halogens
Seventh column Highly reactive Will steal electrons from other atoms Form ionic bonds Fluorine, Chlorine, Bromine, Iodine, Astatine, Tennessine
Alkali Metals
First column
Desperately wants to give away their singular valence electron
Form ionic bonds
Hydrogen, Lithium, Sodium, Potassium, Rubidium, Cesium, Francium
Alkali Earth Metals
Second column
Give away their two valence electrons
Form ionic bonds
Beryllium, Magnesium, Calcium, Strontium, Barium, Radium
Noble Gases
Eighth column
Full orbitals, chemically stable
Do not form bonds
Helium, Neon, Argon, Krypton, Xenon, Radon, Oganesson
Isotopes
Different number of neutrons than usual
Types of Orbitals
s: spherical, holds two electrons
p: three shapes, hold six electrons
d: five shapes, holds ten electrons
f: seven shapes, holds fourteen electrons
Heisenberg Uncertainty Principle
We cannot measure the location and speed of an electron at the same time.
Stable Atoms
Have full outer energy levels Level 1: 2e- Level 2: 8e- Level 3: 18e-, fine w/ 8 Level 4: 32e-, fine w/ 8 Level 5,6,7: 32e-, fine w/ 8