Periodic Table
This first version of the Periodic Table seen today was created by a Russian Chemist by the name of.
Who was Dimitri Mendeleev?
An element with only one electron in its outer shell, one proton, and one neutron.
What is Hydrogen?
If an element is completely unreactive to other elements it has
What is a full valence shell or 8 valence electrons?
Elements with properties of both metals and nonmetals.
What are metalloids?
A substance that contains only one type of atom.
What is an element?
Columns (vertical) on the periodic table.
What are groups?
An element with 10 protons and 8 valence electrons in it's outer shell.
What is Neon?
Noble gases have 8 valence electrons in their outer shells, with the exception of
What is Helium?
Group 7A is often known as _______ because of its ability to form salts.
What is the halogens?
What does the nucleus of an atom contain?
What are protons & neutrons?
Rows (horizontal) on the periodic table.
What are periods?
An important element to organic life, composed of 4 valence electrons and only 2 orbitals.
What is Carbon?
An element has an outer shell composed of 2 valence electrons, what group does it belong to?
What is alkali earth metals?
Group 2A is known as this reactive group.
What are Alkali Earth Metals
A negatively charged subatomic particle with no mass.
What is an electron?
What does a period determine?
The most reactive element on the periodic table with 1 valence electron and 7 electron shells.
What is Francium?
If an element is extremely reactive to other elements it has
What is one valence electron?
The least reactive group on the periodic table.
What is group 8A or the Noble Gases?
Where can electrons be found in an atom?
Where are orbitals or orbiting the nucleus?
What does the main group determine?
What are the number of valence electrons in the outer shell?
A metalloid with 5 electron shells and 6 in its outer orbital.
What is Tellurium?
Elements with only 7 valence electrons are mostly part of this group (one exception).
What are nonmetals?
The most reactive group on the periodic table.
What is the Alkali Metals or Group 1A?
Where can valence electrons be found?
Where is the outermost energy level or the outer electron orbital?