Families
What is a "family" or "group" on the periodic table?
A vertical column of elements
Horizontal rows of elements
What does the atomic number represent?
The number of electrons or the number of protons
What is the symbol for the element Carbon?
C
The charge held by neutrons, electrons and protons
Electrostatic charge
What do all the elements in a family (or group) have in common?
The same number of valence electrons
How many electron energy levels (or "shells") do Lithium and Beryllium have?
2
What does the atomic mass represent?
The number of protons plus the number of neutrons
What is the symbol for the element Chlorine?
Cl
Two similar charges that do not attract each other
Repulsion
How many valence electrons does the element Sodium have?
1
Name an element that has 3 energy levels.
Na, Mg, Al, Si, P, S, Cl, or Ar
How many electrons does Cesium have?
55
What element has the symbol Ag?
Silver
The force that draws the opposite charges of electrons and protons to each other
Attractive force
Name an element that has 5 valence electrons.
Nitrogen, Phosphorous, Arsenic, Antimony, or Bismuth
How many electron energy levels does Iodine have?
5
How many protons does Nickel have?
28
What element has the symbol Y?
Yttrium
The force that holds the nucleus together
Strong force
What element has seven valence electrons and two energy levels?
Fluorine (F)
What element has three energy levels and four valence electrons?
Silicon (Si)
How many neutrons does Tin have?
69
What is the symbol for the element Mercury?
Hg
Electrons on the outermost energy level
Valence electrons