Trends in Metal and Nonmetal Reactivity 2016.notebook
January 06, 2017
DO NOW
1.) Which element is considered malleable?
A) Gold
B) Hydrogen
C) Sulfur
D) Radon
2.) Which element has the most occupied principle energy
levels?
A) C
B) Cl
C) Kr
D) He
3.) Which element is non­reactive? Why?
A) K
B) Na
C) F
D) Ne
Nov 15­3:07 PM
Periodic Trends
Aim: Reactivity of metals and nonmetals.
Nov 15­3:07 PM
1
Trends in Metal and Nonmetal Reactivity 2016.notebook
January 06, 2017
Metallic and Nonmetallic Character
The most metallic elements are in the bottom left hand
corner of the periodic table.
The most nonmetallic elements are in the top right hand
corner of the periodic table.
Nov 17­2:58 PM
Reactivity Trends
Metal reactivity increases down a group because as nuclear shielding
increases and the nucleus' hold on the valence electron weakens,
therefore it is easier to remove valence electrons.
Nonmetal reactivity decreases down a group because the nucleus' ability
to gain more valence electrons weakens due to more nuclear shielding.
Nov 17­2:58 PM
2
Trends in Metal and Nonmetal Reactivity 2016.notebook
January 06, 2017
Metal Reactivity
For Metals: the most reactive metals
are those that can lose their valence
electrons the most easily.
Francium has the lowest electronegativity
and the largest atomic radius therefore it is
very easy to remove it's valence electron.
Francium is the most reactive metal.
Nov 17­2:52 PM
Nonmetal Reactivity
The most reactive nonmetals are
those that can most easily gain
valence electrons.
Fluorine has the highest electronegativity
and the smallest atomic radius therefore
it gains valence electrons the most easily.
Fluorine is the most reactive nonmetal.
Nov 17­2:54 PM
3
Trends in Metal and Nonmetal Reactivity 2016.notebook
January 06, 2017
Reactivity of metals
https://www.youtube.com/watch?v=uixxJtJPVXk&feature=youtu.be
Nov 17­2:58 PM
Why don't the noble gases have electronegativity values
and the largest first ionization energies?
Nov 17­2:58 PM
4
Attachments
Experiment lithium.asf
Experiment potassium.asf
Experiment cesium.asf