Periodic Table of Elements Flashcards
After a series of revisions, the early periodic table has evolved into its current version.
By looking at the modern periodic table, we can see that the elements are arranged _________ in order of
_______ atomic ____
horizontally
increasing
number
Each ______ is identified by its symbol placed at the ______ of the square
element
middle
in element, the ______ number and the atomic _______ are also indicated.
atomic
mass
The _______ columns are called groups or families.
vertical
Groups/Families: The elements in each column have similar _______ _______.
chemical properties
Group A or Family A
Group 1A- Alkali Metal
Group 2A- Alkaline Earth Metals
Group ЗА- Aluminum Group/Boron Family
Group 4A- Carbon Family
Group 5A- Nitrogen Family
Group 6A- Oxygen Family or Chalcogens
Group 7A- Halogens
Group 8A- Noble/Inert Gases
Transition elements are found between Group 2A and Group 3A, while the inner transition elements (lanthanides. and actinides) are found at the? ____ of the ______.
Group B or Family B
bottom of the table.
the periodic table consists of several horizontal rows called ??
period or series.
There are ?? periods which are designated as _______
seven
1, 2, 3, 4, 5, 6, and 7.
how many periods does Period 1 hav3?
Period 1- has 2 Elements
how many periods does Period 2 and 3 hav3?
Period 2 and 3- each has
8 elements
how many periods does Period 4 and 5 hav3?
Period 4 and 5- each has
18 elements
how many periods does Period 6 hav3?
Period 6-has 32 elements
how many periods does Period 7 hav3?
Period
7-has
14
elements
Elements belonging to the same
group
have
similar last
sublevel
configuration.
The Blocks
Thus, using the ______ _______of the elements, the periodic table can be divided into _____ regions or blocks: s-, p-, d-, and f- block.
electron configuration
four
provide insight into the chemical behavior of elements by helping us to determine the valence electrons of an atom.
Electron configurations
According to the classification of the elements
into metals, nonmetals
and metalloids, elements occupy a ______ ______ in the periodic
table.
certain location
are elements having the highest degree of metallic behavior.
Metals
These are elements showing less or no metallic properties
than those of metals and metalloids.
Non-Metals
All the elements having low degree of metallic behavior. It show some metallic properties and some nonmetal properties.
Metalloids
