pls tell me all atomic mass of first 20 element (class 9)??
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Hydrogen,Helium,Lithium, Berelium,Boron,Carbon,Nitrogen, Oxygen,Fluorine, Neon,Sodium,Magnesium, Aluminum, Silicon, Phosphorus, Sulphur, Chlorine, Argon,Potassium, Calcium. The 1st 20 element are: ... Nitrogen. Oxygen
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Heya....❤❤❤
here is ur answer....
in the attachment....
hope it helps....
plzz mark me as brainliest my dear !!!
❤❤❤
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