What Group Is It In?
What Group of elements is Sodium (Na) in?
Alkali Metals
Strontium
2
Which element has the smallest atomic radius?
a.) Phosphorus
b.) Antimony
c.) Bisumuth
d.) Nitrogen
Nitrogen
Why does atomic size increase as you go down a row?
You add an energy level
Alkaline earth metal in the 4th period?
Calcium
Halogens
Aluminum
3
Which has the highest electronegativity?
a.) Molybdenum
b.) Ruthenium
c.) Silver
d.) Iodine
Why does electronegativity increase as you go across a row?
The number of protons in the nucleus increases, which results in a stronger pull on the valence electrons
Smallest size Halogen
Flourine
What group of atoms is Radon in?
Noble Gases
Arsenic
5
Which of the following has the lowest ionization energy?
a.) Francium
b.) Cesium
c.) Rubidium
d.) Lithium
A.) Francium
Why does ionization energy get smaller going down a group?
The distance between the nucleus and the valence electrons gets larger, so it is easier to take the valence shell.
Neutral atom with 34 electrons
Selenium
What group is Berrilyium in?
Alkaline Earth metals
Polonium
6
Which of the following has the lowest electronegativity?
a.) Cesium
b.) Rubidium
c.) Iodine
d.) Astatine
Cesium
Why does atomic radius decrease going across a period?
Stronger pull from the nucleus in the same amount of energy levels
Alkali Metal with the largest ionization energy
Lithium
What group is Sulfur in?
Other Non-metals or non-metals
Helium
2
Which atom has the highest atomic radius?
a.) Palladium
b.) Silver
c.) Niobium
d.) Tellurium
How can you remember electronegativity and ionization energy trends tomorrow?
Use the electronegativity number on the green periodic tables!
-2 anion with 18 electrons
Sulfur