Names and Symbols of F Block Elements in Periodic Table

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f-block elements are the ones in which the 4f and 5f orbitals progressively filled.

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f-block elements are also referred to as 'Inner transition metals'.

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They are in the 6th and 7th row in a separate panel at the bottom of the periodic table.

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The 6th group is called Lanthanides and the 7th group is called Actinides.

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The f-block elements in the periodic table are shown below.

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Lanthanides contain elements whose atomic numbers vary from 57 to 71 and are 15 in number.

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They are - Lanthanum(La) - Cerium(Ce) - Praseodymium(Pr) - Neodymium(Nd) - Promethium(Pm) - Samarium(Sm) - Europium(Eu)

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- Gadolinium(Gd) - Terbium(Tb) - Dysprosium(Dy) - Holmium(Ho) - Erbium(Er) - Thulium(Tm) - Ytterbium(Yb) - Lutetium(Lu)

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- Actinium(Ac) - Thorium(Th) - Protactinium(Pa) - Uranium(U) - Neptunium(Np) - Plutonium(Pu) - Americium(Am) - Curium(Cm)

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- Berkelium(Bk) - Californium(Cf) - Einsteinium(Es) - Fermium(Fm) - Mendelevium(Md)) - Nobelium(No) - Lawrencium(Lr).

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The oxidation state of both lanthanide and actinide series is +3.

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Both lanthanide and actinide are highly electropositive and reactive in nature.

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Both lanthanide and actinide show magnetic properties.

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Except for promethium, lanthanides are non-radioactive in nature whereas all actinide series elements are radioactive.

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