Overview
This lecture covers the names and symbols of the chemical elements with atomic numbers 1 to 103, essential for understanding the periodic table.
Periodic Table Elements 1–20
- H — Hydrogen, He — Helium, Li — Lithium, Be — Beryllium, B — Boron
- C — Carbon, N — Nitrogen, O — Oxygen, F — Fluorine, Ne — Neon
- Na — Sodium, Mg — Magnesium, Al — Aluminum, Si — Silicon, P — Phosphorus
- S — Sulfur, Cl — Chlorine, Ar — Argon, K — Potassium, Ca — Calcium
Transition and Post-Transition Metals (21–56)
- Sc — Scandium, Ti — Titanium, V — Vanadium, Cr — Chromium, Mn — Manganese
- Fe — Iron, Co — Cobalt, Ni — Nickel, Cu — Copper, Zn — Zinc
- Ga — Gallium, Ge — Germanium, As — Arsenic, Se — Selenium, Br — Bromine
- Kr — Krypton, Rb — Rubidium, Sr — Strontium, Y — Yttrium, Zr — Zirconium
- Nb — Niobium, Mo — Molybdenum, Tc — Technetium, Ru — Ruthenium, Rh — Rhodium
- Pd — Palladium, Ag — Silver, Cd — Cadmium, In — Indium, Sn — Tin
Metalloids, Nonmetals, and Noble Gases (57–86)
- Sb — Antimony, Te — Tellurium, I — Iodine, Xe — Xenon, Cs — Caesium
- Ba — Barium, La — Lanthanum, Ce — Cerium, Pr — Praseodymium, Nd — Neodymium
- Pm — Promethium, Sm — Samarium, Eu — Europium, Gd — Gadolinium, Tb — Terbium
- Dy — Dysprosium, Ho — Holmium, Er — Erbium, Tm — Thulium, Yb — Ytterbium
- Lu — Lutetium, Hf — Hafnium, Ta — Tantalum, W — Tungsten, Re — Rhenium
- Os — Osmium, Ir — Iridium, Pt — Platinum, Au — Gold, Hg — Mercury
- Tl — Thallium, Pb — Lead, Bi — Bismuth, Po — Polonium, At — Astatine, Rn — Radon
Actinides and Lanthanides (87–103)
- Fr — Francium, Ra — Radium, Ac — Actinium, Th — Thorium, Pa — Protactinium
- U — Uranium, Np — Neptunium, Pu — Plutonium, Am — Americium, Cm — Curium
- Bk — Berkelium, Cf — Californium, Es — Einsteinium, Fm — Fermium
Key Terms & Definitions
- Element Symbol — The one- or two-letter abbreviation for a chemical element.
- Atomic Number — The number of protons in the nucleus of an atom, defining the element.
- Transition Metals — Elements in the d-block of the periodic table, often forming colored compounds.
- Lanthanides — Elements 57–71, known for their magnetic and phosphorescent properties.
- Actinides — Elements 89–103, mostly radioactive and include uranium and plutonium.
Action Items / Next Steps
- Memorize the symbols and names for elements 1–103.
- Practice with flashcards or quizzes to reinforce element recognition.
- Review periodic table trends and elemental groupings for deeper understanding.