Chemistry, asked by rishikagour58, 1 year ago

How to memorize atomic mass for first 20 elements in periodic table?

Answers

Answered by riyasingh1115

atomic no * 2 it gives u approx value of atomic mass

anirudh102981: noope some elemets don't agree this....

riyasingh1115: approx value of an element

anirudh102981: o_O

riyasingh1115: some element like chlorine u have to remember

riyasingh1115: plz add in brainlist

Answered by anirudh102981

some atomic masses are double of their atomic number but some are exceptional u have to learn them... it is essiy u will surely learn it.
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