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radioactive elements that belong to the Periodic Table group of actinides. They have increasing atomic numbers starting from actinium (Z=89) to lawrencium (Z=103). Actinides are often used in nuclear reactors and are known for their radioactive properties.
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Which two actinides occur naturally?
Uranium and thorium are the two actinides that occur naturally in the Earth's crust. They are found in low concentrations and have important roles in various nuclear reactions and processes.
What are Lanthanides and Actinides?
Elements. The Lanthanides are: Atomic No.575859606162636465666768697071NameLaCePrNdPmSmEuGdTbDyHoErTmYbLu The Actinides are:Atomic No.8990919293949596979899100101102103NameAcThPaUNpPuAmCmBkCfEsFmMdNoLr
Scientists are uncertain about the electronic structures of the actinides because?
the actinides have complex atomic structures due to the presence of inner 5f orbitals, leading to difficulties in predicting their electronic configurations accurately. Additionally, the actinides exhibit multiple oxidation states, making it challenging to determine the precise electron arrangements in different chemical environments. The influence of both relativistic effects and electron correlations further complicates the understanding of actinide electronic structures.
What is the group number of neptunium?
Neptunium is a member of the actinides group.
The first of the actinides?
The first actinide element is actinium, which has the atomic number 89. It is a radioactive element that was discovered in 1899 by André-Louis Debierne. Actinium is commonly used in medicine for cancer treatment and as a neutron source in scientific research.
Are all atoms of actinides radioactive?
Yes. All of the actinides are radioactive.
Is a characteristic of Actinides?
All actinides are radioactive elements and some are man made.
Is a characteristic of the actinides?
All actinides are radioactive elements and some are man made.
What are all but 3 actinides?
radioactive
What was the first of all the actinides?
Thorium (90)
What is made up of all radioactive elements?
The actinides
Who named actinides as 'actinides'?
mosley
Why are the nuclear structures of the actinides more important than the electron configuration's of the actinides?
Because the nuclei of actinides are unstable and spontaneously break apart, all actinides are radioactive.
What do the lanthanide and actinides all have in common?
They are F-block elements
Is plutonium a non metal?
No, it is a metal, as all the other actinides are.
What are hazards in actinides?
importance abuot actinides
Family characteristic actinides have?
All are radioactive and all of them can show the oxidation state of +3
