Periodic Table of the Elements
www.periodni.com › download › periodic_table-colorPERIODIC TABLE OF THE ELEMENTS BORON ATOMIC NUMBER ELEMENT NAME SYMBOL Metal Alkali metal Alkaline earth metal Transition metals Lanthanide Actinide Chalcogens element Halogens element Noble gas Semimetal Nonmetal - gas - liquid - solid - synthetic STANDARD STATE (25 °C; 101 kPa) RELATIVE ATOMIC MASS (1) HYDROGEN GROUP IUPAC GROUP CAS HELIUM ...
THE PERIODIC TABLE - NUST
www.nust.na › sites › defaultThe Periodic Table • Periodic Law - When the elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties • Modern Periodic consists of: Periods - Horizontal rows of the periodic table (side to side) Groups or families - – vertical (up and down) column of elements in ...
CHAPTER5 Periodic Classification of Elements
ncert.nic.in › textbook › pdfPeriodic Table. The Periodic Table proved to be the unifying principle in chemistry. It was the motivation for the discovery of some new elements. When Mendeléev started his work, 63 elements were known. He examined the relationship between the atomic masses of the elements and their physical and chemical properties. Among chemical properties,
The Periodic Table of the Elements
science.widener.edu › ~svanbram › ptable_6The Periodic Table of the Elements 1 H Hydrogen 1.00794 2 He Helium 4.003 3 Li Lithium 6.941 4 Be Beryllium 9.012182 5 B Boron 10.811 6 C Carbon 12.0107 7 N Nitrogen 14.00674 8 O Oxygen 15.9994 9 F Fluorine 18.9984032 10 Ne Neon 20.1797 11 Na Sodium 22.989770 12 Mg Magnesium 24.3050 13 Al Aluminum 26.981538 14 Si Silicon 28.0855 15 P Phosphorus ...