The Atom
Add these together to find the mass number
What are neutrons and protons.
Group with 2 valence electrons, somewhat reactive with low density, melting points and boiling points
What are Alkaline Earth metals?
Third period with eight valence electrons.
What is Argon?
These elements have properties of both metals and nonmetals; also sometimes called semi-conductors.
What are metalloids?
The creator of the Periodic Table.
Who is Dmitri Mendeleev?
The number that relates to the amount of protons in an atom of a given element.
What is the atomic number?
Number of valence electrons in an atom of Germanium
What is 4 valence electrons?
Group 14 nonmetal.
What is Carbon?
Number of valence electrons for Group 2 elements.
What is 2 Valence electrons?
This group of elements belongs to the family that has 7 valence electrons.
Who are the halogens?
Location of electrons
What is the electron cloud?
These elements are shiny, malleable and good conductors of heat and electricity; usually solid at room temperature.
What are metals?
The element found above the first group that is actually a non-metal.
What is Hydrogen?
Elements in groups 3-12
What is Transition Metals?
A set of elements with the same number of valence electrons
What are periodic table groups?
A subatomic particle that has about the same mass as a proton.
What is a neutron?
The two groups traditionally found below the periodic table but actually fit within it.
What are lanthanides and actinides?
The halogen with electrons in the fifth energy level.
What is Iodine?
These elements are dull, brittle (when found as a solid) and poor conductors of electricity; usually gases at room temperature.
What are non-metals?
These two groups/families of elements are extremely reactive and readily combine to make salts.
What are Alkali metals and Halogens?
These particles must be equal in a neutral atom.
What are electrons and protons?
Names of the Metalloid elements
What are Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Astatine?
An alkaline Earth metal in the 4th period
What is calcium?
The family in the periodic table with no reactivity because...
What are the noble gases due to a full outer shell?
The main organization of the periodic table
What is atomic number?