Group/Family Names
Oxidation Numbers and Ions
History and Organization of the Periodic Table
Reading the Periodic Table
Periodic Trends
100
The group number of the Alkali Metals
1
100
The charge/oxidation number of group 17 (the halogens)
-1
100
The Russian chemist who created the first periodic table
Mendeleev
100
The element in group two, period 4
Calcium
100
The trend in electronegativity as you go down a group
Electronegativity decreases as you go down a group
200
The group number of the Alkali Earth Metals
2
200
Define anion
An ion with a negative charge (formed by elements a negative oxidation number)
200
The number of periods on the periodic table
7
200
The element in group 17, period 3
Sulfur
200
The direction in which ionization energy increases across a period
It increases as you go from left to right
300
The group number of the halogens
7A / 17
300
Define cation
An ion with a positive charge (formed by elements with a positive oxidation number)
300
Do elements in the same period or group have the same number of energy levels?
Same period
300
The noble gas in period 5
Xenon
300
The direction in which atomic radius decreases on the periodic table
Atomic radius decreases as you go from left to right, and as you go up
400
The family name for the group 8A elements
Noble Gases
400
Which groups will form cations?
group 1a, 2a, 3a, sometimes 4a
400
The location of metals, metalloids, and nonmetals on the periodic table
Metals to the left of the stair stepper (most of the periodic table), metalloids are shaded, and nonmetals are to the left
400
The group number and period number of Aluminum (Al)
3A / 13 = group, period number = 3
400
From which of the following atoms is it easiest to remove an electron? K, Cl, Ti, As
K. It has the lowest ionization energy. Therefore it will take the least amount of energy to remove the electron
500
SURPRISE QUESTION! How many atoms are in 2.5 moles of Calcium? How many grams are in 3.7 moles of Calcium?
There are 1.505 x 10^24 atoms in 2.5 moles of Calcium. (2.5 x (6.02 x 10^23))
There are 148.3 grams in 3.7 mols of Calcium (3.7 x 40.078)
500
The oxidation number/charge of all main group elements.
group 1a = +1
group 2a = +2
group 3a = +3
group 4a = +/- 4
group 5a = -3
group 6a = -2
group 7a = -1
500
Elements in the same group share the same (list 3 things)
1. chemical properties 2. valence electrons 3. oxidation numbers
500
Where to find the molar mass of an element.
Molar mass is equivalent to atomic mass. So, its the number with decimals next to the element symbol!
500
For Fluorine (F), list its electronegativity (high or low), ionization energy (high or low), and atomic radius (high or low)
Electronegativity is high, Ionization energy is high, and Atomic Radius is low