Question

why is there a 2 in short forms.Ex- Co2, O2, N2

Answer 1

Answer:

BECAUSE IN ALL THESE EXAMPLES THERE IS A GAS THAT'S WHY THERE IS 2 IN SHORT FORMS

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Answer 2

Answer:

2 means the number of atoms of the element in the chemical formula.

For example, in CO2 , it contains one atom of carbon and two atoms of oxygen,