◎Atomic mass of this periodic table.
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Anonymous:
what do you mean
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Hydrogen/Atomic number-1
HELIUM/ Atomic number-2
Lithium/Atomic number -3
Beryllium/Atomic number-4
Boron/Atomic number-5
Carbon/Atomic number-6
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Answer:
maine apko follow kar liya ab aap bhi muje karo
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