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Yashi mukherjee
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Asked: 2020-10-21T04:38:27+00:00 In:

Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?

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NCERT Solution for Class 10 Science Chapter 5
Periodic Classification of Elements
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-90
Questions No-4 Part 2

2020-2021cbsechapter 5class10ncertperiodic classificationscience
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    2 Answers

    1. Best Answer

      Both helium (He) and neon (Ne) have filled outermost shells. Helium has a duplet
      in its K shell, while neon has an octet in its L shell.

      For more answers visit to website:
      https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-5/

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    2. Following properties are common in the atoms of Helium and Neon:
      (i) Both have completely filled outermost orbit.
      (ii) Both have stable electronic configuration.
      (iii) Both belong to same group, i.e. zero group in Modern Periodic Table.

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