Periodic Table
What is Periodic Table ?
Why we need Periodic Table ?
How scientists arranged elements in Periodic Table ?
History of classification of elements
Prout’s Hypothesis
Dobereiner’s Triads
Li Na K
7 23 39
Newland’s Law of Octaves
Lother Meyer Curves
Periodic Table
Mendeleev’s Periodic Table
Mendeleev’s Periodic Law
Modern Periodic Table
Modern Periodic Law
Long Form of Periodic Table
Special features of Modern or Long Form of Periodic Table
🧠 Periodic Table Facts You Should Know
Hydrogen is the most abundant element in the universe, fueling stars and making up about 75% of elemental mass.
Helium was first discovered in the Sun's spectrum before it was found on Earth.
Oxygen makes up about 21% of Earth’s atmosphere and is essential for most life—but it's also highly reactive and corrosive!
Carbon is the backbone of life and forms more compounds than any other element.
Nitrogen comprises about 78% of our atmosphere, yet most organisms can't use it directly.
Iron is the most common element (by mass) in Earth’s core.
Gold is so malleable that a single gram can be stretched into a thread over 2 kilometers long.
Gallium melts in your hand—its melting point is around 30°C.
Mercury is the only metal that is liquid at room temperature.
Neon doesn’t react with anything—it’s a true loner among elements.
Tungsten has the highest melting point of all metals: over 3400°C!
Lithium is used in mood-stabilizing drugs and powerful batteries.
Bismuth is one of the most diamagnetic elements and forms colorful crystal structures.
Arsenic was once widely used in medicines and cosmetics (!), despite being highly toxic.
Radium, discovered by Marie Curie, was once added to drinking water for its supposed health benefits.
Phosphorus was first discovered by alchemists trying to make gold—from urine.
Technetium was the first element to be artificially created before being found in nature.
Francium is so rare that scientists estimate there are only ever a few grams of it on Earth at any given time.
Chlorine is a greenish-yellow gas with a sharp, suffocating odor.
Iodine is a shiny purple solid that turns into a violet gas when heated.
Copper is one of only a few metals with natural color other than silver or gray.
Cesium reacts explosively with water—even small amounts.
Fluorine is the most reactive element and can corrode glass, metals, and even humans.
Silicon is essential in electronics and also makes up much of Earth’s crust.
Hafnium is used in nuclear reactors due to its ability to absorb neutrons.
For more curious minds, my book "Interesting Facts About All Elements of the Periodic Table" dives deep into every element’s discovery, uses, properties, and surprising stories.