Periodic Table 1
The electrons involved in chemical reactions.
What are valence electrons?
The electrons in the outer energy level are called this.
What are valence electrons?
The number of protons in the nucleus of an atom is known as this, and it determines an element's identity on the periodic table. What term describes the number of protons (and electrons) in an atom?
What is... the Atomic Number.
The reactivity of an element is dependent on this.
What is the ability of an atom to either completely fill or empty its outer most energy level?
The most reactive metals on the periodic table.
What are alkali metals?
This Russian Scientist created the Periodic Table.
What is... Dmitri Mendeleev?
An atom with a completely full outer most (valence) energy level is this.
What is unreactive/ noble gas?
A model with a nucleus in the middle surrounded by electrons in electron levels surrounding it. It shows the internal structure of an atom.
What is the Bohr Model?
The columns on a periodic table are called this.
What are groups?
These atoms have properties of both metals and non metals.
What are metalloids
Elements in groups 3-12 are called what?
What are Transition Metals?
Mendeleev organized the elements of his periodic table according to this.
What is... increasing atomic mass?
Group 17 contains highly reactive nonmetals with seven valence electrons that tend to react violently with alkali metals and are more commonly known as this.
What are Halogens?
This group of 8 elements, found on the periodic table between metals and nonmetals, exhibits properties of both and includes elements such as silicon and germanium.
What are metalloids?
Elements in the same group share this.
The same number of valence electrons (and/or properties)
Where can we find non-metals on the periodic table?
Group 18 elements are extremely nonreactive nonmetals known as this.
What are noble gases?
Extremely reactive elements in group 1 have only 1 valence electron and are known as this.
What are alkali metals?
The rows on a periodic table are known as this.
What are periods?
The three classes of elements are these.
What are metals, metalloids, and nonmetals?
What groups are located underneath the periodic table?
Lanthanides and Actinides
The modern periodic table is organized according to this.
What are... by increasing atomic number?
This element is the most reactive Metal on the Periodic Table.
What is... Francium?
This element is the most reactive Non-Metal on the Periodic Table.
What is... Flourine?
Very reactive elements in group 2 have only 2 valence electrons and are known as this.
What are alkaline Earth metals?