Day 1 Flashcards
(19 cards)
What is periodic law
Elements and their property’s are functions of there atomic number
what is a period
Horizontal rows on the periodic table. The period #is = to the #pf energy level The period # is on the left side
Left side metals
Steps metalloids
Right side gas
What is a group
The vertical columns on the periodic table
Aka family’s
Elements in the same group have similar characteristics because they have the same # of valence electrons
Metals
The most active located in group 1-2
Metallic property’s increase top to bottom
The most active metal is francium
What are the property’s of metals
Solids at room temperature Only exception is mercury Malleable= can be pounded in to thin sheets and shaped Metals are ductile. Drawn into a wire Luster= ability to reflect light Good conductors of heat and electricity Low electronegativity Low ionization energy
What is electronegativity
How badly an element wants and electron
Fr has the lowest
Fr =.7
F has the highest
F=4.0
In a group decreases
In a period increases
Table S
What is ionization energy
Energy required to remove valence electrons
Fr- 393 kilojoules per mol
F-1681 kilojoules per mol
In a group decreases
In a period increases
Table S
Melps
Metals electrons lose positive smaller
Transition elements
Group 3-12
Wonky configs
Hard solids with high melting points
Multiple oxidation states giving them colored solutions of varying colors
Metaloids
Properties of both metals and non metals Main Si Ge As Sb Te
Non metals
Mostly gasses or solids at room temp Exception bromine-liquid Brittle No luster High ionization energy High electronegativity Poor conductors Tend to gain electrons
Noble gasses
Don’t react because they have filled valence shells
Allotrope
Nonmetal that can exist two or more forms
Who made the periodic table
Mendeleev
What is malubility
The ability to be pounded in to thin sheets
What is ductility
Made in to a wire
List the metaloid
B Si Ge As Sb Te
What do we call noble gases
Monoatomic
What are the rest of the nonmetal gases called
Diatomic