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The Actinide series contains elements with atomic #'s 89 to 103 and is the sixth group in the periodic table. This series is below the Lanthanide series, which is located under the main body of the periodic table. Both Actinide and Lanthanide series are refered to as Rare Earth Metals. Hope this helped
The statement of the characteristics of the actinides are radioactive, highly electropositive, paramagnetic in nature, high density and have high melting and boiling point.
What are actinides?
Elements 89 to 103 are actinides, which progressively occupy their 5f sublevel. Actinides are conventional metals with characteristics of both the d- and f-blocks, while they are radioactive elements. They include thorium, protactinium, and uranium, as well as eleven transuranic elements created artificially by nuclear processes. The series is the row beneath the Lanthanide series, which is beneath the periodic table's main body.
What is characteristics of actinides?
All of them are radioactive. These elements do not even have stable isotopes. Electro positivity is high in actinides. They're all soft, and some can be diced with a knife. They have a silvery tint (that tarnishes in the air) and a high plasticity. These elements, especially finely fragmented powders, are pyrophoric.
Actinides are highly dense metals with a number of forms. There are a variety of allotropes that can develop, with plutonium having at least six. Actinium is an exception, as it possesses fewer crystalline phases than other metals. Actinides, like lanthanides, have relatively high melting points, but there is no clear pattern in the melting and boiling temperatures of lanthanides.
The nature of these elements is malleable and ductile. The presence of unpaired electrons is required for all actinides to be paramagnetic. When they react with hot water or a dilute acid, they release hydrogen gas. Most nonmetals react with actinides right away. In ion colors, the majority of actinoids are colored.
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