Periodic Trends
Symbols and Elements
History
Groups
Miscellaneous
100
What is electronegativity?
The ability of an element attract electrons in a chemical bond.
100
What element corresponds to this symbol:
Hg
Mercury
100
The modern periodic table is organized by:
A. atomic mass
B. atomic number
C. Random order
D. Alphabetical order
B
100
What are the elements in group 1 called?
Alkali Metals
100
What are valence electrons?
The electrons on the outermost energy level of an atom
200
What does a lower atomic radii mean?
Shorter distance away from the nucleus
200
What is the elements with the most electronegativity? The least?
Francium, Flourine
200
Who is considered the father of the periodic table?
Mendeleev
200
Elements from which group combine with those from group 1 to form salts?
Halogens: Group 17
200
What elements form the representative elements?
1-2 and 13-18
300
An atom with an atomic radius smaller than that of sulfur (S) is __________.
- A.) Oxygen (O)
- B.) Chlorine (Cl)
- C.) Calcium (Ca)
- D.) Lithium (Li)
- E.) None of the above
C.) Oxygen (O)
300
The symbol for the element is Uuo.
What is this element's name?
Ununoctium
300
Who ordered the elements by atomic mass and predicted the location of new elements?
John Newlands
300
The most reactive group of elements is?
Group 1
300
Fill in the blanks
Word Bank:Periods,Groups
1. ____ are vertical
2. ____are horizontal
1. Periods
2. Groups
400
Will atomic radii increase or decrease as you move down the group?
Decrease
400
What is the most reactive element?
Francium
400
How many elements were in Lavoisier's original table?
33
400
How many valence electrons do elements in group 2 have?
2 valence electrons
400
Another name for the Lanthanide and Actinide series of elements is?
Rare Earth Elements
500
Why is the electronegativity value of most noble gases zero?
Because of their full valence electron shell, the noble gases are extremely stable and do not readily lose or gain electrons.
500
Question for George
What is the half-life of Francium?
about 22 minutes
500
Who is this and what did he do ?
This is Henry Moseley. He arranged the elements by atomic number.Noooooo
500
True or False
Elements in group 18 are called Noble Gases because they are stable and all contain 8 valence electrons
False
Helium has 2
500
What is the noble gas notation for Technetium?
[Kr]4d5 5s2