Answer the second question please.

Ali Abid asked Sep 18, 2022

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25 votes

Ali Abid asked Sep 18, 2022

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22 votes

they are abbreviations, but for example, gold (Au) is an abbreviation of the latin word for gold Aurum. same goes for potassium (Kalium)

Tao answered Sep 22, 2022

by Tao

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