Practice Test Flashcards
(23 cards)
A column or family on the periodic table is called a
Group
Any element in groups 3-12 is a
Transition metal
In grouping the elements, Mendeleev, used their
Atomic Mass, chemical and physical properties
How many valence e- does Tellurium have and what’s its oxidation number
6, -2
What occurs in a in a regular repeating pattern on Mendeleev’s table
Chemical/physical properties
The modern periodic law states that physical and chemical properties of elements are functions of their
Atomic number
Elements in the same family on the periodic table
Group
Elements on the far left of the periodic table tend to be
Metals
Elements on the far right side tend to be
Non- metals
Define and give an example of a metalloids
It has metallic and nonmetallic properties an example is Si
Except for the metalloids what do all of the elements on the right side of the stair step have in common
Non metals
Be able to identify elements on the periodic table by atomic number or symbol and also be able to determine their number of valence- e and oxidation number
.
A horizontal row of elements is called a
Period
The outermost electrons on an atom are called _______________ electrons
Valence
The first people to notice a connection between atomic mass and properties were
Dobreiner / Newlands
What is the periodic trend for electro negativity
Increase > ^
What is the periodic trend for ionization energy
Increase > ^
The tendency for atoms to try and get and keep a full outer shell of electrons is called
Octet rule
The outermost shell of electrons is called
Valence e-
Gaining or losing electrons is called
Ionization
The ____________ is the relative size of an atom
Atomic Radi
____________ put the elements in mass order from the lightest to the heaviest first
Never
Group 3-12 on the periodic table are called
Transition metals
