133 of 46300 Questions
View AllCBSE Discussions Periodic Classification of Elements Recent Questions
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0 votes0 answer161 views4 Years Ago
An Element Belongs To Group 17. It Is Present In Third Period And Its Atomic Number Is 17
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0 votes0 answer164 views4 Years Ago
Listed Below Are The Location Of Certain Elements In Groups And Periods Of The Periodic Table.
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0 votes0 answer164 views4 Years Ago
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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0 votes0 answer159 viewsShanaya 4 Years Ago
The Position Of Five Elements In The Periodic Table Are Shown Below
CBSE DiscussionsModified 4 Year Ago Shanaya
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0 votes0 answer295 views4 Years Ago
X Is An Element Of Modern Periodic Table. It Is Surrounded By Elements Having Atomic Number 17, 34, 36 And 53.
CBSE DiscussionsModified 4 Year Ago
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0 votes0 answer242 views4 Years Ago
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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0 votes0 answer243 views4 Years Ago
The Electronic Configuration Of An Element X Is 2, 8, 8, 2.
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Modified 4 Year Ago
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0 votes0 answer196 views4 Years Ago
Out Of Li, C And N, Which Element Form The Most Basic Oxide And Which Form The Most Acidic Oxide?
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0 votes0 answer700 views4 Years Ago
A Metal M Belongs To 13th Group In The Modern Periodic Table. Write The Valency Of The Metal.
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0 votes0 answer343 views
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0 votes0 answer159 views4 Years Ago
Calcium Is An Element With Atomic Number = 20. Is It More Reactive Or Less Reactive Than Mg?
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0 votes0 answer174 viewsAkanksh 4 Years Ago
Which Element Comes After (right) Lithium In The Periodic Table?
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0 votes0 answer427 views4 Years Ago
Name Two Elements Whose Valencies Are Equal To Their Group Number.
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0 votes0 answer166 views4 Years Ago
What Is The Basis For The Clarification Of Modern Periodic Table?
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0 votes0 answer167 views4 Years Ago
Among The Following Elements F, CL, Br And I, Which Does Not Fit In Dobereiners Triads?
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0 votes0 answer329 views4 Years Ago
Assertion : Atomic Size Increase On Going Down The Group Reason : New Shells Are Being Added As We Go
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0 votes0 answer364 views
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0 votes0 answer176 views4 Years Ago
Which Of The Following Will Have The Most Negative Electron Affinity And Which One Has The Least?
CBSE DiscussionsModified 4 Year Ago