.svg)
Celebrate National Periodic Table Day on February 7 by learning a little bit more about one of the greatest scientific achievements in history! This day marks the anniversary of when Dmitri Mendeleev first presented his periodic table of elements in 1869. Since then, it has been used as an invaluable tool for predicting and discovering new elements, understanding chemical reactions and properties, and making major advances in chemistry.
<div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1869</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Mendeleev's Periodic Table</div><div class='timeline-text'>Dmitri Mendeleev publishes his version of the periodic table, arranging elements by atomic weight.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1913</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Bohr's Atomic Model</div><div class='timeline-text'>Niels Bohr introduces his atomic model, contributing to understanding atomic structure and influencing the periodic table.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1924</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Quantum Mechanics Influence</div><div class='timeline-text'>The rise of quantum mechanics brings a deeper understanding of electron behavior, impacting the modern periodic table´s understanding.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>1945</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Synthetic Elements Addition</div><div class='timeline-text'>Post WWII, scientists generate synthetic elements for the first time, expanding the periodic table beyond naturally occurring elements.</div></div></div><div class='timeline-item'><div class='timeline-left'><div class='timeline-date-text'>2016</div></div><div class='timeline-center'></div><div class='timeline-right'><div class='timeline-text timeline-text-title'>Most Recent Additions</div><div class='timeline-text'>The elements Nihonium, Moscovium, Tennessine and Oganesson are officially recognized, filling the seventh row of the periodic table.</div></div></div>
<div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>1</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Learn about the elements</h3><p id='' class='facts-text'>Take the time to research and learn about each element on the table, what it is used for and what makes it unique.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>2</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Create a periodic table poster</h3><p id='' class='facts-text'>Make your own poster with all the elements of the periodic table. You can use colors and symbols to make it look more interesting.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>3</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Watch a documentary</h3><p id='' class='facts-text'>Check out some documentaries online or on TV that discuss the periodic table and its importance in science.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>4</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Challenge yourself</h3><p id='' class='facts-text'>Put your knowledge to the test by playing some element related games or quizzes.</p></div></div><div id='' class='facts-item'><div id='' class='facts-header'><h3 id='' class='facts-number'>5</h3></div><div id='' class='facts-text-wrapper'><h3 id='' class='facts-title'>Build an element sculpture</h3><p id='' class='facts-text'>Get creative and make a sculpture using elements from the periodic table.</p></div></div>
<div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>A</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>It helps us to study and understand the elements</h3><p id='' class='whywelove-text'>The Periodic Table provides students and scientists with a standard way of organizing and understanding chemical elements. The table arranges the elements according to their atomic numbers, mass numbers and other properties which help determine how atoms behave in different situations.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>B</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>It is a vital tool for chemistry</h3><p id='' class='whywelove-text'>The Periodic Table is one of the most important tools in chemistry as it allows chemists to make predictions about the behavior of atoms and molecules based on their position within the table. It also serves as an invaluable reference guide for chemists so they can quickly identify various elements.</p></div></div><div id='' class='whywelove-item'><div id='' class='whywelove-letter-cont'><div class='whywelove-letter'>C</div></div><div id='why-we-love-main-cont'><h3 id='' class='whywelove-title'>It is a representation of scientific progress</h3><p id='' class='whywelove-text'>Beyond its practical applications, the Periodic Table also serves as a powerful symbol of our progress in furthering our fundamental understanding of matter and life. It stands as a testament to centuries of scientific research and exploration into what makes up our universe, and is an ever growing source of knowledge and progress in science.</p></div></div>
<div class='facts-item'><div class='facts-header'><h3 class='facts-number'>1</h3></div><div class='facts-text-wrapper'><h3 class='facts-title'>The Periodic Table Is Always Growing</h3><p class='facts-text'>When Dmitri Mendeleev created the Periodic Table in 1869, it only contained 63 elements. Today, there are currently 118 confirmed elements.</p></div></div><div class='facts-item'><div class='facts-header'><h3 class='facts-number'>2</h3></div><div class='facts-text-wrapper'><h3 class='facts-title'>The Elements Are Arranged by Atomic Number</h3><p class='facts-text'>The elements are ordered by their atomic number, which is the number of protons in an atom's nucleus. This order is what makes the periodic table so useful to scientists.</p></div></div><div class='facts-item'><div class='facts-header'><h3 class='facts-number'>3</h3></div><div class='facts-text-wrapper'><h3 class='facts-title'>Mendeleev Predicted the Existence of Undiscovered Elements</h3><p class='facts-text'>Mendeleev left gaps in his original Periodic Table for elements that had not yet been discovered, accurately predicting their properties based on their position.</p></div></div><div class='facts-item'><div class='facts-header'><h3 class='facts-number'>4</h3></div><div class='facts-text-wrapper'><h3 class='facts-title'>Complete Rows Are Known as Periods</h3><p class='facts-text'>Each row in the table is known as a 'period', and each period represents another energy level of electrons.</p></div></div><div class='facts-item'><div class='facts-header'><h3 class='facts-number'>5</h3></div><div class='facts-text-wrapper'><h3 class='facts-title'>Only Some Elements Occur Naturally</h3><p class='facts-text'>Of the 118 confirmed elements, 90 occur naturally on Earth. The rest have all been synthesized in laboratories.</p></div></div>
National Periodic Table Day is celebrated on February 7 every year. In 2024 National Periodic Table Day will occur on a Wednesday.
2023
Feb 7
Tuesday
2024
Feb 7
Wednesday
2025
Feb 7
Friday
2026
Feb 7
Saturday
2027
Feb 7
Sunday
.svg){kind=small}
.svg){kind=small}
