The Periodic Table

Front 1

What is the Periodic law

Back 1

THe chemical properties of the elements are dependent, on a systematic way, upon heir atomic numbers.

Front 2

How are the elements arranged as far as rows and colums

Back 2

-Periods (rows); there are 7 periods, representing the 7 quantum numbers.
-Groups (columns)

Front 3

What does the Roman numeral and the A and B represent in each group?

Back 3

The Roman Numeral represents the number of valence electrons.
-A elements are the Representative elements,
-B elements are the nonrepresntative elements, including the transition elements.
*The electron config is shown by these numbers. Example to come.

Front 4

Representative elements

Back 4

those in froups 1A through 7A, all of with have incompleteleyfilled s or p subshells of the hifhest principal number.
Note: with the exception of the noble gases (Group 8) elements all have comletely filled p subshells.

Front 5

Nonrebresentative elements (including the transition elements.

Back 5

have partly filled d sublevels, and the lanthanide and actinide series, which have partly filled f sublevels.

Front 6

An element in Group VA will have a valence electron config of what?

Back 6

s^2p^3(2 + 3 = 5 valenve electrons).

Front 7

what is a general trend when you go down and across the periodic table.

Back 7

-accross more electrons in valence shell so more tightly bound to nucleous
-down more shells so less tightly around nucleous.