Do you know how many elements are available on our earth? And do you know how these elements are categorized into different groups? Knowing answers to these questions is very important while studying chemistry, which is solely based on the periodic table.
Contents of the Article
And to help you out, we have put together a detailed guide to
- Periodic Table
- Classification of All Elements in Modern Periodic Table
- Different Groups in the Periodic Table
- Elements of Periodic Table with Number
What is a Periodic Table?
Before we get into the topic, let us first understand the History of the Periodic Table. In the year 1869, a Russian Scientist started categorizing available elements into groups and categories based on their atomic numbers and chemical formulas, as well as common similarities between elements, which are called Periodic Trends. However, at first, it was hard to organize elements into different groups; thus, it took rearranging multiple times. And over the years, this table has been labeled as a Periodic Table.
Classification of Elements
All the elements in the Periodic Table, as stated above, are classified into multiple categories, such as,
- Noble Gases
The elements which have the nature of donating electrons along with certain metallic properties are defined as metal. In the periodic table, these elements are located on the left side. Also, within the category, the metal property of elements along the period decreases, whole towards the down of the group, it generally increases because of increasing atomic radius in each element. Zinc, Iron, Gold, Copper, etc are some popular examples of metals.
Unlike metals, these elements possess an electron-accepting nature and are generally found on the right side of the Periodic Table. This electron-accepting tendency is directly proportional to nuclear charge and inversely proportional to atomic size. Thus, for example, along the period, where the nuclear charge gradually rises, the tendency also increases. Whereas down the group, where atomic size increases, electron-accepting nature decreases.
These elements in the periodic table are referred to as the bridge between both metallic and non-metallic elements. Mainly because all the elements in the group have similar properties of certain metals as well as non-metals. Similar to the non-metals, these elements are located on the right side of the Periodic table.
A unique set of 18 elements is located on the very right side of the periodic table, which is known for its filled electronic configuration. These elements include gases such as Helium, Radon, Krypton, etc.
Periodic Table Diagram
Groups of Periodic Table
Currently, in the modern Periodic Table, there are 8 groups, such as
- Alkali Metals – All the elements in group 1 are regarded as Alkali Metals, mainly because they have a chemical reaction with water, which will result in alkali solutions.
- Alkaline Earth Metals – Similar to the group 1 elements, these elements change upon interacting with water from Alkaline solutions such as Hydroxides.
- Rare Earth Metals – Metals such as Lanthanum, Neodymium, Cerium, Scandium, etc. which exist in limited amounts in the earth’s crust are called Rare Earth Metals.
- Halogens – Upon reaction with the metals, these elements produce salts as end products. And elements such as Astatine, Chlorine, and Fluorine in Group 7A are called Halogens.
- Crystallogens – The elements of the carbon family are Lead, Carbon, Silicon, Germanium, etc. The Group 14 elements are referred to as Crystallogens.
- Chalcogens – Elements such as Oxygen, Polonium, Tellurium Sulphur, etc. That can be generally extracted from oxides and sulfide ores.
- Pnictogens – The elements of Group 15 are generally called the Nitrogen Family. The main characteristic of this family is their ability to produce suffocating and choking effects when oxygen is absent in the atmosphere.
Elements of Periodic Table With Atomic Number
The article above covered in great detail the Periodic Table, Classification of the Periodic Table, Groups of the Periodic Table, and Elements of the Periodic Table with Atomic Numbers. And there are many more complex topics such as these in the Chemistry subject, which students generally struggle to understand or learn. If that’s the case, then the Online Interactive Classes offered by Tutoroot might be a good choice for you.
Frequently Asked Questions
What is the Significance of Atomic Numbers?
The Atomic Numbers are essentially the number of protons present in each element, which makes them uniquely dissimilar to each other.
How many elements are there in the periodic table?
Currently, in the Modern Periodic Table, there are 118 elements.
How many groups are in the periodic table?
As stated above, the periodic table has 18 groups.