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Name the Elements in the Correct Order of Their Increasing Atomic Numbers Present in the First, Second, and Third Short Periods of the Periodic Table.

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Question

Name the elements in the correct order of their increasing atomic numbers present in the first, second, and third short periods of the periodic table.
State which of the elements are –

  1. metallic 
  2. non-metallic 
  3. noble gases

in each of the periods 2 and 3.

Answer in Brief
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Solution

Names of elements of:

Period first Hydrogen  Helium
H He

 

Period – 2 Li Be B C N O F Ne
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon

 

Period – 3 Na Mg Al Si P S Cl Ar
Sodium Magnesium Alummium Silicon Phosphorus Sulphur Chlorine Argo
  1. Metals: Li, Be, Na, Mg, Al
  2. Non-metals: C, N, O, F, P, S, Cl
  3. Noble – gases: Ne, Ar
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Chapter 5: The Periodic Table - Additional Questions

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Viraf J. Dalal Simplified ICSE Chemistry [English] Class 9
Chapter 5 The Periodic Table
Additional Questions | Q 14.1

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