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Undoubtedly, when studying Chemistry, it's challenging to remember all the average atomic masses, chemical symbols... of the elements. Therefore, the most comprehensive periodic table of chemical elements below will assist you in your studies and assignments. This periodic table is used during tests and exams.
There are various forms of periodic tables such as stair-step form, fan-shaped form, shell form. However, the most commonly used type of periodic table today is the grid-form periodic table.
The Most Comprehensive Periodic Table of Chemical Elements
1. Periodic Table of Chemical Elements for 8th Grade
2. Principles of Arranging Elements in the Periodic Table
- In the same row (period), elements will have the same number of electrons.
- In the same column (group), elements will have similar electron configurations.
- Elements are arranged from left to right, and from top to bottom in order of increasing nuclear charge.
3. Structure of the Periodic Table of Chemical Elements
The periodic table consists of element cells, periods, element groups, and atomic blocks. Specifically as follows:
* Element Cell
- An element cell is where each chemical element resides within the periodic table.
- The serial number of the element cell = atomic number of the element (= number of protons = number of electrons = nuclear charge unit)
* Period
- A period is the row in which elements have atoms with the same electron shell, arranged from left to right in increasing nuclear charge order.
- The period number = number of electron shells.
- There are up to 7 periods in the periodic table, numbered sequentially from 1 to 7. Among them, periods 1, 2, 3 are small periods, periods 4, 5, 6, 7 are large periods, and period 7 is incomplete.
* Element Group
- An element group is a column comprising elements with similar electron configurations and chemically similar properties.
- There are 2 types of element groups:
+ Group A: includes p and s block elements. The group number for Group A is equal to the sum of the outermost electron count.
+ Group B: consists of d and f block elements with atomic electron configurations ending in
* Atomic Block
- Elements in the periodic table belong to 4 atomic blocks: s-block, p-block, d-block, and f-block.
- The last electron fills into which subshell determines the block to which the element belongs.
4. Relationship Among Elements in the Periodic Table
Most elements within this periodic table are interconnected, depending on their respective positions. Specifically:
5. Comparing the Properties of Elements in the Periodic Table of Chemical Elements
Based on nuclear charge, the composition, and properties of compounds vary, changing across periods and groups. Specifically:
The periodic table of chemical elements has been updated by Mytour here. You can download the most comprehensive periodic table of chemical elements to support your learning, especially during your examinations.
In addition to updating the periodic table, it's also essential to refer to the atomic mass table of chemical elements, which is very helpful in improving Chemistry learning, thus fostering a greater appreciation for the subject.
