actinide

nounB1

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Danh từ

noun

Plural noun:

actinides

1.
Any of the 15 radioactive elements of the periodic table from actinium to lawrencium that are positioned under the lanthanides, to which they have similar chemistry.
2.
Any of the 14 elements from actinium to nobelium (lawrencium is excluded by some authors as it is a d-block rather than an f-block element).
3.
(dated)Any of the 14 elements from thorium to lawrencium (actinium having been mistakenly excluded because it was thought to be a d-block element in the past).

Từ liên quan

Cùng gốc / liên quan

actinidicnonactinideorganoactinideradioactinidesuperactinidetransactinide actinium thorium protactinium uranium neptunium plutonium americium curium berkelium californium einsteiniumfermiummendelevium nobelium

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Nguồn gốc từ

From actin ide.