What is the molecular formula for Hydrochloric acid​

HCI

Explanation:

Hope this helps. :

I think hydrochloric acid has no formula but I know it's a combo of hydrogen and chlorine

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

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periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.