what will be answer of question 20
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option number A is correct
pppp73:
dude i have asked for question 20
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the answer of 21 is a
because the atomic no and atomic mass of hydrogen is 1 that's why it has only one electron and one proton in there atom
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because the atomic no and atomic mass of hydrogen is 1 that's why it has only one electron and one proton in there atom
thank you
please mark me as BRAINLIEST ANSWER
bye!!
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