📖 what
What is the periodic table?
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Quick Answer
The periodic table is an organised chart of all known chemical elements, arranged by their atomic number and shared properties.
The Full Story
The periodic table arranges every known chemical element in order of atomic number — the number of protons in each atom. Elements are grouped so that those with similar chemical behaviour fall into the same vertical columns. Dmitri Mendeleev created an early version in 1869 and famously left gaps for elements not yet discovered, correctly predicting their properties. Today the table holds 118 confirmed elements, from hydrogen to oganesson, and remains one of science most powerful organising tools.
Key Facts
1.Elements are ordered by atomic number
2.Mendeleev published an early version in 1869
3.The table now holds 118 confirmed elements
YouTube Angle
Suggested video title for this topic:
"What Is the Periodic Table — Chemistry Master Map"