Lanthanoids are...

Lanthanoids are

14 elements in the sixth period (atomic no. 90 to 103) that are filling 4f sublevel

14 elemenets in the seventh period (atomic number = 90to103) that are filling 5f sublevel

14 elements in the sixth period (atomic number = 58to71) that are filling the 4f sublevel

14 elements in the seventh period (atomic number = 50 to 71) that are filling 4f sublevel

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(a) Lanthanoids and actinoids are belongs to 3rd group. b) Lanthanoids and actinoids are called as transition elements.

TO which group Lanthanoids and actinides belongs ?

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The sum of the first three ionization energies of the lanthanoides Ce, Eu, Gd, Yb, Lu is

The f-block consists of the two series lanthanoids and actinoids. Because Lanthanum closely resembles the Lanthanoids. The Lanthanoid resemble one another more closely than do the members ofordinary transition elements in any series. They have only one stable oxidation state. The chemistry of the actinoids is on the other hand, much more complicated. The complication arises partly owing to the occurance ofa wide range of oxidation states in these elements and partly because their radioactivity creates special problems in their study Wrong statement of the following is

Lanthanoid contraction implies

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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-3 (PREVIOUS NEET/AIPMT QUESTIONS)

The correct order of ionic radii of Y^(3+), La^(3+), Eu^(3+) and Lu^(3...
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Among the following series of transition metal ions, the one where all...
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Lanthanoids are
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The number of moles of KMnO4 reduced by one mole of KI in alkaline med...
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Four successive member of the first row tran sition elements are liste...
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The aqueous solution containing which one of the following ion will be...
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More number of oxidation states are exhibited by the actinoids than by...
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In which of thc following pairs are both the ions coloured in aqueous ...
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Copper sulphate dissolves in excess of KCN to give
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Which one of the following ions is the most stable in aqueous solution...
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Identify the incorrect statement among the following
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The correct order of decreasing second ionization enthalpy of Ti(22), ...
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Which one of the elements with the following outer orbital configurati...
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Which of the following ions will exhibit colour in aqueous solutions ?
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Which one of the following ions has electronic configuration [Ar]3d^6 ...
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Which of the following pairs has the same size
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Match List I (substances) with List II (processes) employed in the man...
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Which of the following oxidation states is common for all lanthanides ...
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Compare the stability of + 2 oxidation state of the elements of the fi...
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Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. Thi...
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