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An Element X Has Mass Number = 35 And Number Of Neutron = 18.
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(i) In This Ladder (figure) Symbols Of Elements Are Jumbled Up. (ii) Arrange Them In The Order Of Their Group Also
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A Part Of The Periodic Table Has Been Shown Below
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An Element X (atomic Number = 17) Reacts With An Element Y (atomic Number = 20) To Form A Divalent Halide
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The Atomic Number Of Nitrogen (N), Oxygen (O) And Fluorine (F) Are 7, 8 And 9 Respectively
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From The Part Of A Periodic Table, Answer The Following Questions
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Atomic Radii Of The Elements Of The Second Period Are Given Below
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The Elements Li, Na And K Each Having One Valence Electron, Are In Periods 2, 3 And 4 Respectively Of Modern Periodic Table
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Identify And Name The Metals Out Of The Following Elements Whose Electronic Configurations Are Given Below.
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An Element X Placed In 2nd Group And 4th Period Of The Periodic Table Burns In The Presence Of Oxygen To Form A Basic Oxide
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Lithium Is An Alkali Metal With Atomic Number = 3 And Number Of Valence Electron Is 1.
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The Following Table Shows The Positions Of Four Elements A, B, C And D In The Periodic Table
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Consider The Following Elements, Li, Cl, Br, Na, K And I
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An Element Has Same Number Of Electrons In I And IV Shells And In The II And III Shells
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(i) An Element X Has Both The Shells (ii) In Which Group Of The Periodic Table (iii) Write Its Electronic Configuration
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(i) What Term Can Be Used For (ii) Give The Names Of The Metalloids (iii) In Which Groups Of The Periodic Table
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Taking The Example Of An Element Of Atomic Number =16,
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(i) How Does Electronic Configuration Of An Atom (ii) Which Element Has A Total Of Three Shells
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Which Of The Following Elements Belong To (i) Same Period? (ii) Same Group Explain Giving Reason.
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Atomic Number Of Three Elements X,Y And Z Are Given Below
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