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Yashi mukherjee
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Asked: 2020-10-21T04:38:35+00:00 In:

Lithium, sodium, potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?

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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-1

2020-2021cbsechapter 5class10ncertperiodic classificationscience
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    2 Answers

    1. Best Answer

      Yes. The atoms of all the three elements lithium, sodium, and potassium have one
      electron in their outermost shells.

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

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    2. Lithium, Sodium and Potassium have following similarities:
      (i) They all have valence electron equal to 1.
      (ii) They all belong to same group, i.e. Group 1st in Periodic Table.
      (iii) They all form ionic bond with non-metals.
      (iv) They all are highly electropositive.
      (v) They all are highly reactive.

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