element table

element table   Dan element table

Arrangement of the modern periodic table · elements is based on Mendeleev's · observations ; however, instead of being organized by · atomic weight , the modern

The Periodic Table of the Elements 1 H Hydrogen 2 He Helium 3 Li Lithium 4 Be Beryllium 5 B Boron  The periodic table is arranged by atomic weight and valence electrons These variables allowed Mendeleev to place each element in a certain row

ราษบูรณะ Each element within the periodic table has its own block Within these blocks are identifying numbers and letters The number on the very top is called the Scientists, Professionals, Teachers, and Students of Chemistry widely use the periodic table of elements to search for chemical elements