Definition
The Periodic Table is a chart that organizes all known chemical elements based on their properties.
Basic Terms
There are 3 major things in a periodic table, they are the atomic number, atomic mass and the symbol of their element used in chemical formulas or used as short forms
The atomic number represents the number of proton in a element
The atomic mass is the avg weight of atom including all the isotopes
Symbol of a atom represents the short form of a element
Structure Of The Periodic Table
There are 18 groups in a periodic table, each representing the each type of element
There are various type of these elements like the following
Alkali Metal - Group 1
Alkali earth metal - Group 2
Transition Metals - Group 3-12
Halogens - Group 17
Noble Gas - Group 18'
Alkali Metal
Alkali metals are highly reactive elements, they react highly especially with water
Soft And Shiny metals
Example -: Lithium, Sodium And Etc
Alkali Earth Metals
Alkali earth metals are less reactive than group 1 elements
Compared to alkali metals, alkali earth metals are more harder
Example -: Magnesium, calcium or etc
Transition Metals
Transition metals are in the middle of the periodic table, are very good at conducting electricity
Transition metals form colored compounds
Example -: Iron, zinc or etc
Halogens
Halogens are very reactive non-metals
They often form salts
Example -: Fluorine, Chlorine or etc
Noble Gases
Noble gases are unreactive gases
They are stable gases
Example -: Argon and etc
Why are elements arranged by increasing atomic number rather than atomic mass in the modern periodic table?
What information can be determined about an element based on its position in the periodic table (group and period)?
How do atomic radius, ionization energy, and electronegativity vary across a period and down a group?
Why do noble gases have the highest ionization energies in their respective periods?
Why does fluorine have a higher electronegativity than chlorine, even though both are halogens?