Periodic table

German chemist named Lothar Meyer proposed a “periodic table of elements” on the base of periodic repetition of properties. In 1864, before Mendeleev, and John Newlands arranged the elements in order of atomic mass where every eight elements has similar properties. He called the relationship “the law of octaves”. Even so, this law could not be applied for the elements beyond Calcium, so it was not accepted by the scientific community. The modern periodic table is thought to be the outermost…

Chlorine The element chlorine is located in the 7th group in the periodic table it is the symbol for CI. Chlorine is a chemical element it has a atomic mass of 35. Chlorine has 17 protons, 18 neutrons, and 17 electrons. The electron configuration for chlorine is 3s2-3p5. Chlorine has a boiling point of 3.16, and is family with halogen. Chlorine was discovered in 1774 by Carl Wilhelm Scheele. He obtained it through the reaction of the mineral pyrolusite manganese dioxide with hydrochloric acid.…

Periodic Table of the Elements My elephant drawing represents potassium. I drew a banana because they are high in potassium. I also drew water (h2o) which is very violent when it hits potassium (k). The elephant itself represents element potassium. The red color of the elephant symbolizes it being burnt from the water. When water hits potassium it creates a massive explosion resulting in the elephant being wounded. The elephant undergoes a lot of corrosive reactions. The ionization decreases…

first periodic table in 1869. The periodic table he made was very different from the modern day periodic table we know today. Henry Moseley updated Mendeleev's version of the periodic table in 1915. This is more like the periodic table that we know and use today. The only difference is that there has been many more elements added. Mendeleeve also had predicted a lot of the characteristics and properties of elements that would fill up some of the spaces that he left in his periodic table.…

Hydrogen is an Alkali earth metal in group 1 on the periodic table. Hydrogen has an atomic mass of 1 and an atomic number of 1. Hydrogen has 1 VALENCE electron and 1 neutron. It has 1 ring, because it’s in period 1. Hydrogens state of matter is gas. Lithium is a Alkali Earth Metal on the Periodic Table. Lithium's state or matter is solid. Lithium has a atomic number of 3 and an atomic mass of 7 when rounded. It has 1 valence electron around its nucleus and 4 neutrons in the nucleus. Lithium has…

The sixth element in the periodic table is one of the most important elements of them all, carbon. This element, located on group fourteen and period two of the periodic table, has an atomic number of 6 and a molar mass of 12.01; this means that it has 6 electrons, 6 protons, and 6 neutrons. The element is lightweight, fairly small, the fourth most abundant element on Earth, and is essential for living, growing, and reproducing. Carbon is found in all living and non-living organisms, in the form…

“Periodic Table” by Primo Levi elaborates on the idea that one must make personal sacrifices in order to experience true fulfillment. Throughout the novel, he highlights on the challenges one faces while executing self-serving actions. While working in Milan, Levi withholds romantic feelings for his fellow co-worker, Giulia, due to his lack of taking risks. Rather than pursuing a relationship that would bring happiness for both himself and Giulia, he “[does] not return her embrace” as he fears…

Xenon is one of the 6 noble gases on the periodic table belonging to group 18. The element was discovered by Sir Ramsay in 1898. Xenon’s symbol is Xe and its atomic number is 54. Xenon’s atomic mass is 131.293 grams. Its boiling point is -107 degrees Celsius, while its freezing point is -112 degrees Celsius. The density of Xenon at 20 degrees Celsius is 0.005887 grams per cubic centimeter. Xenon has 21 isotopes Xenon is described as being completely colorless and odorless, however when…

The Periodic Table by Primo Levi was very interesting. You could really tell that he had a deep fascination with chemistry. He relates what happens in his life to the chemical elements. Each chapter of the book is named after a chemical element in the periodic table and he relates all of his life. He doesn’t seem to be able to separate his work life and personal life. It’s almost like the more he came to understand the periodic table and how to work with the elements he would also understand…

is a term used to describe the trends of the periodic table pertaining to the element’s properties. One of these trends is known as atomic radius. Atomic radius is the term referring to one half the distance between the nuclei in a diatomic molecule. This atom’s size depends on the size of the electron cloud surrounding the inner nucleus. As one moves across a period, the atomic radius is smaller. In other words, when one moves across the periodic table from left to right, the atomic radius gets…