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2 Οκτ 2019 · At the bottom of the periodic table is a special group of metallic radioactive elements called actinides or actinoids. These elements, usually considered ranging from atomic number 89 to atomic number 103 on the periodic table, have interesting properties, and play a key role in nuclear chemistry.
Periodic table. The actinide (/ ˈæktɪnaɪd /) or actinoid (/ ˈæktɪnɔɪd /) series encompasses at least the 14 metallic chemical elements in the 5f series, with atomic numbers from 89 to 102, actinium through nobelium. (Number 103, lawrencium, is sometimes also included despite being part of the 6d transition series.)
The actinides are a group of 15 different elements located at the very bottom row of the periodic table. You may know this group of elements by a few different names: actinide series or actinoids. These elements range from an atomic number of 89 all the way to atomic number 103.
Actinoid element, any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group, they are significant largely because of their radioactivity.
12 Ιαν 2022 · The actinide or actinoid elements are a series of elements including atomic number 89 (actinium) through 103 (lawrencium). Here is a list of elements that are actinides, a subset of the rare earth elements group.
30 Ιουν 2023 · The Actinide series contains elements with atomic numbers 89 to 103 and is in the sixth period and the third group of the periodic table. The series is the row below the Lanthanide series, which is located underneath the main body of the periodic table.
