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first 20 elements

science 10th class

VALENCES OF THE ELEMENT

ByNitish Kumar September 30, 2021September 30, 2021

S.No. Elements Symbol Atomic No. Valency 1 Hydrogen H 1 +1 2 Helium He 2 0 3 Lithium Li 3 +1 4 Beryllium Be 4 +2 5 Boron B 5 +3 6 Carbon C 6 +4 7 Nitrogen N 7 -3 8 Oxygen O 8 -2 9 Fluorine F 9 -1 10 Neon Ne 10…

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  • Home
  • NCERT Books
    • NCERT Books for Class 7
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  • General Studies
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    • Class 10th
    • Class 9th Chapter 6 –Tissue
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