Elements up to atomic number 92 (Uranium) are generally considered naturally occurring on Earth in macroscopic quantities. Elements with atomic numbers 93 (Neptunium) and 94 (Plutonium) also occur naturally, but only in trace amounts, primarily as products of neutron capture and radioactive decay of Uranium. Elements beyond 94 are predominantly synthetic, created in laboratories or nuclear reactions, although some very heavy elements might exist fleetingly in specific astrophysical events.
What is the total number of naturally occurring elements ?
Asked in UPSC CDS 2 2023 · Topic: Inorganic Chemistry (Atomic Structure and Periodicity)
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