Monday, June 1, 2026

How many naturally occurring elements are there?

 There are exactly 94 naturally occurring elements in the periodic table (ranging from Hydrogen with atomic number \(1\) to Plutonium with atomic number \(94\)). [1, 2, 3, 4, 5]

These natural elements, ordered by atomic number with their standard atomic masses, are listed below: [1, 2]
Atomic No. [1, 2, 3, 4, 5]NameSymbolAtomic Mass
1–10Hydrogen–NeonH–Ne\(1.008–20.180\)
11–20Sodium–CalciumNa–Ca\(22.990–40.078\)
21–30Scandium–ZincSc–Zn\(44.956–65.38\)
31–40Gallium–ZirconiumGa–Zr\(69.723–91.224\)
41–50Niobium–TinNb–Sn\(92.906–118.71\)
51–60Antimony–NeodymiumSb–Nd\(121.76–144.24\)
61–70Promethium–YtterbiumPm–Yb\((145)–173.05\)
71–80Lutetium–MercuryLu–Hg\(174.97–200.59\)
81–90Thallium–ThoriumTl–Th\(204.38–232.04\)
91–94Protactinium–PlutoniumPa–Pu\(231.04–(244)\)

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Pythagorous theorem for sides of a triangle of any angle theta

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