Periodic Table 1
Cu
copper
Ag
Silver
K
Potassium
Al
Aluminum
This noble gas has less than 8 electrons
What is helium?
99 protons
What is Einsteinium?
The elements in column 18.
What is Noble Gases?
Elements in the same group share these characteristic
What are chemical and physical properties?
Atomic number 9
What is fluorine?
Ni
What is Nickel?
Kr
What is Krypton
Mendeleev organized the elements of his periodic table according to this.
What is increasing atomic mass?
20 electrons
What is calcium?
The vertical columns of the periodic table
groups/families
These metals are the most reactive
Alkali metals or group 1A
The three classes of elements are these.
What are metals, nonmetals, metalloids?
Atomic mass 131
What is Xe?
Extremely reactive elements in group 1 have only 1 valence electron and are known as this.
What are alkali metals?
Ba
What is Barium?
These nonmetals are found in group 17
What are halogens?
Most elements on the periodic table are these (non-metals, metalloids, or metals)
What are metals?
F
What is Fluorine?
A Greek word meaning uncuttable..
What is atomos?
The reactive elements in group 2 are known as this.
What are alkaline earth metals?
A row on the periodic table.
What is period?