Periodic Table

Periodic Table
Periodic Table

What is the Periodic Table?

The periodic table is an arrangement of all the elements known to man in accordance with their increasing atomic number and recurring chemical properties. They are assorted in a tabular arrangement wherein a row is a period and a column is a group.

Elements are arranged from left to right and top to bottom in the order of their increasing atomic numbers. Thus,

  • Elements in the same group will have the same valence electron configuration and hence, similar chemical properties.
  • Whereas, elements in the same period will have an increasing order of valence electrons. Therefore, as the energy level of the atom increases, the number of energy sub-levels per energy level increases.

The first 94 elements of the periodic table are naturally occurring, while the rest from 95 to 118 have only been synthesized in laboratories or nuclear reactors.

The modern periodic table, the one we use now, is a new and improved version of certain models put forth by scientists in the 19th and 20th century. Dimitri Mendeleev put forward his periodic table based on the findings of some scientists before him like John Newlands and Antoine-Laurent de Lavoisier. However, Mendeleev is given sole credit for his development of the periodic table.

Periodic Table PDF:-Download Here

Mendeleev Periodic Table

Dimitri Mendeleev, widely referred as the father of the periodic table put forth the first iteration of the periodic table similar to the one we use now. Mendeleev’s periodic law is different from the modern periodic law in one main aspect.

  • Mendeleev modeled his periodic table on the basis of increasing atomic mass, whereas, the modern periodic law is based on the increasing order of atomic numbers.

Even though Mendeleev’s periodic table was based on atomic weight, he was able to predict the discovery and properties of certain elements. During his time only around half of the elements known to us now were known, and most of the information known about the elements were inaccurate. Mendeleev’s Periodic Table was published in the German Journal of chemistry in 1869.

List of Periodic Table Elements

118 Elements Of Periodic Table

Frequently Asked Questions on Periodic Table

What is the periodic table of elements definition?

Periodic Table Of The Elements. A Chart Of The Chemical Elements That Displays Them In Rows Horizontally In Order Of Increasing Atomic Number And Vertically According To Similarity Of The Chemical Properties Of Their Atoms.

How many elements are there?

118 Elements are present in the Periodic Table.

What is the Symbol of Gold?

Au

Who Discovered Iodine?

Iodine was discovered by Bernard Courtois in 1811.

What is the Symbol of Silver?

Ag

20 Comments

  1. Congratulations for the efforts initiated!

  2. This is one of the best platform for learning.

    1. Yes you are apselutly right. Byjus is Best platform to learn.

  3. I am studying in 8th standard I like the Byju’s app

  4. It was wonderful app and helpful for all students

  5. It is not enough to know what an element is, but rather how and why it is used. When I learned the table there were only 103, now 118. I find it amazing and always willing to learn more. This presentation was very informative.

  6. Thank you very much. It’s really helpful.

  7. I love this app so much

  8. Wow its really nice

  9. it is creative and this presentation takes less time gives more knowledge and good platform for quick learning.

  10. I like it because l am interested and it is helpful for all the students

  11. It is so helpful for me
    It is so good

  12. Thank you so much. It’s very useful and helpful for everyone

  13. Thanks for keeping me updated! Articles like this are perfect reads to keep up with the industry!

  14. Thanks very much its very helpful

  15. Thank you very much . it is very helpful

  16. Very nice app for students
    Thanks so much

  17. very helpful thank you

  18. Nice. It is very helpful.

  19. Nice content.

Leave a Comment

Your email address will not be published. Required fields are marked *