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Elements.
The Lanthanides are:
Atomic No.575859606162636465666768697071NameLaCePrNdPmSmEuGdTbDyHoErTmYbLu
The Actinides are:Atomic No.8990919293949596979899100101102103NameAcThPaUNpPuAmCmBkCfEsFmMdNoLr
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoactinides: any of a series of radioactive elements with atomic numbers 89 through 103... Lanthanide/lanthanoid ) series comprises the 15 elements with atomic numbers 57 through 71..... They're all synthetic and can't be found naturally...
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What do metals include?
alkaline metals, alkaline earth metals, lanthanides and actinides and metals in mixed groups
What are transion elements?
Transition elements reside in the Transition Metals section of the Periodic Table. Groups in this section always contain four elements. This section has most of the known elements in and it includes the Lanthanides and Actinides.
How many elements under atomic number 101 have names ending with ium?
39 from main table + all 14 lanthanides +all 14 actinides (but looking for elements<101 so, only 11) Hence, 64/100 elements with names ending in -ium.
Which two actinides occur naturally?
Uranium and Plutonium are the only elements from the Actinides series that occur naturally on Earth, though they are rare.
What is the group number of neptunium?
Neptunium is a member of the actinides group.
What is the difference between lanthanides and actinides?
Wht is the difference between Lanthanides and Actinides?
Do actinides and lanthanides lose electrons when combining?
Actinides and lanthanides lose electrons and form cations.
Why are lanthanides in period six and actinides in period 7?
Lanthanides have 6 electron shells. Actinides have 7 electron shells.
How many lanthanides and actinides are there?
There are 15 lanthanides (atomic numbers 57-71) and there are 15 actinides (atomic numbers 89-103)
What are the properties of lanthanides and actinides?
The lanthanides and actinides are part of the inner transition metals. Actinides are all radioactive, highly electropositive and tarnish readily in air. Lanthanides burn easily in air, have high melting and boiling points and are strong reducing agents.
The lanthanides and actinides are known as?
Element groups
What about the complex formation ability of lanthanides as campared to actinides?
describe the complex formation by lanthanides?
What is the group number for Lanthanides and Actinides?
Rare Earth elements or lanthanides are placed in the period 6 of the periodic table of Mendeleev. Actinoids are placed in the period 7 of the periodic table of Mendeleev.
How reactive are lanthanides and actinides metals?
lanthanides and actinides are fairly reactive, but not as much as say, the alkali metals in group 1
Where are landthanides and actinides actinides placed in the periodic table?
Lanthanides and Actinides are placed separately as the properties of these elements is quite different from the elements in periodic table.
What are properties of f block elements?
they are of two types lanthanides and actinides
What two elements are shown at the bottom of the periodic table?
Lanthanides and Actinides.
