table of elements Flashcards
what is elements in the periodic table?
Each element is identified by its symbol placed at the middle of the square; the atomic number and the atomic mass are also indicated.
what is the meaning of groups in the periodic table
The vertical columns are called groups or families.
The elements in each column have similar chemical properties.
what are the group a or family a
Group 1A - Alkali Metal
Group 2A - Alkaline Earth Metals
Group 3A - 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
what is group b or family b
Transition elements are found between Group 2A and Group 3A, while the inner transition elements (lanthanides and actinides) are found at the bottom of th table.
what are the meaning of periods?
Notice that the periodic table consists of several horizontal rows called period or series. There are seven periods which are designated as 1, 2, 3, 4, 5, 6, and 7.
what are the periods?
Period 1- has 2 Elements
Period 2 and 3- each has
8 elements
Period 4 and 5- each has 18 elements
Period 6 - has 32 elements
Period 7 - has 14 elements
what are the blocks?
Elements belonging to the same
group have similar last sublevel
configuration. Thus, using the electron configuration of the elements, the periodic table can be divided into four regions or blocks: s-, p-, d-, and f- block.
what is the electron configuration?
Electron configurations provide insight into the chemical behavior of elements by helping us to determine the valence electrons of an atom.
what are metals, non-metals, and metalloids?
According to the classification of the elements into metals, nonmetals and metalloids, elements occupy a certain location in the periodic table.
what are metals?
Metals are elements having the highest degree of metallic behavior.
what are non-metals?
These are elements showing less or no metallic properties than those of metals and metalloids.
what are metalloids?
All the elements having low degree of metallic behavior. It show some metallic properties and some nonmetal properties.
