Periodic Table 1
Cu
copper
Ag
Silver
K
Potassium
Al
Aluminum
This noble gas has less than 8 electrons
What is helium?
The three classes of elements are these.
What are metals, nonmetals, metalloids?
The elements in column 18.
What is Noble Gases?
Elements in the same group share this physical characteristic
What is the same number of valence electrons?
Atomic mass of 131
What is Xenon
Ni
What is Nickel?
Kr
What is Krypton
Mendeleev organized the elements of his periodic table according to this.
What is increasing atomic mass?
The reactive elements in group 2 are known as this.
What are alkaline earth metals?
The vertical columns of the periodic table
groups/families
These metals are the most reactive
Alkali metals
This type of element is found on the top right side of the periodic table
Non metals
The periodic table today is organized by increasing ________________?
What is atomic number (number of protons)?
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?
This class of elements have properties of both metals and nonmetals.
What are metalloids?
Mercury
The atoms we study in middle school are neutral, which means they have the same number of
What is protons and electrons?
The "d" block of elements contains what specific group of elements?
What is the transition metals?
A row on the periodic table.
What is period?