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Consider The Following Figure
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An Element Belongs To Group 17. It Is Present In Third Period And Its Atomic Number Is 17
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Listed Below Are The Location Of Certain Elements In Groups And Periods Of The Periodic Table.
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An Element X Combines With Hydrogen To Form A Compound XH3. The Element X Is Placed On The Right Side Of The Periodic Table.
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The Correct Order Of Increasing Acidic Nature Of
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Consider The Section Of The Periodic Table
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A Non-metal A Which Is The Largest Constituent Of Air Combines With Hydrogen On Heating In The Presence Of Fe (as Catalyst) And Forms A Gas B
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The Position Of Five Elements In The Periodic Table Are Shown Below
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X Is An Element Of Modern Periodic Table. It Is Surrounded By Elements Having Atomic Number 17, 34, 36 And 53.
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X Is An Element With Atomic Number 20.
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Name (i) Two Elements Having Valency 2 (ii) Two Elements Forming Oxides (iii) An Element Having Numbers Of Electrons Double
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Arrange The Following Elements According To The Instructions Written In Paranthesis
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The Electronic Configuration Of An Element X Is 2, 8, 8, 2.
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Out Of Li, C And N, Which Element Form The Most Basic Oxide And Which Form The Most Acidic Oxide?
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A Metal M Belongs To 13th Group In The Modern Periodic Table. Write The Valency Of The Metal.
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Why Does Silicon Has Valency 4 And Chlorine 1?
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Calcium Is An Element With Atomic Number = 20. Is It More Reactive Or Less Reactive Than Mg?
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Which Element Comes After (right) Lithium In The Periodic Table?
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Name Two Elements Whose Valencies Are Equal To Their Group Number.
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What Is The Basis For The Clarification Of Modern Periodic Table?
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Among The Following Elements F, CL, Br And I, Which Does Not Fit In Dobereiners Triads?
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Assertion : Atomic Size Increase On Going Down The Group Reason : New Shells Are Being Added As We Go
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Which Of The Following Will Have The Most Negative Electron Affinity And Which One Has The Least?
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