A: The properties of elements are the pe...

A: The properties of elements are the periodic functions of their atomic weights. B: The properties of elements are the periodic functions of their atomic numbers.

A = Moseley, B = Mendeleeff

A = Mendeleeff, B = Moseley

A = Doberiener , B = Mendeleeff

A = Mendeleff, B = Doberiener

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE

Assertion (A) : Mendeleeff placed "Be, Mg and Ca" in one group. Reaso...
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Which one is not a salient features of the Mendeleeff's periodic table...
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A: The properties of elements are the periodic functions of their atom...
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Assertion (A) : It is a better way of arranging the elements in the pe...
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Z indicates in the notation ^A.Xz. i) Number of protons in the atom ii...
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Assertion (A): Na' is a s-block element Reason (R) : 'Na' gets its las...
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Assertion (A) : 'Cl' is a non-metal. Reason (R): Non-metal has five or...
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(a) Lanthanoids and actinoids are belongs to 3rd group. b) Lanthanoids...
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Assertion (A) : Lanthanides and Actinides are called as Inner Transit...
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Why do elements in the same group have similar physical and chemical p...
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The pair of elements that have similar chemical properties are
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Pavan (P) : The general electronic configuration of alkali metal famil...
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Assertion (A): ‘H' & 'He' belongs to period - 1. Reason (R) : 'H & 'He...
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Assertion (A): The first period in periodic table contain only two ele...
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Suneetha (A) : Third period contain 18 elements, because it has 3 subs...
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James (A) : The positive ions of an element has less in size than its ...
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Balu (B) : Valence of an element with respect to hydrogen is the numb...
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Valeney of Ca is
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Assertion (A) : Atomic radii increase from top to bottom in a group of...
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Assertion (A): Atomic radii of elements decrease across a period from ...
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