What does it mean if an element has no subscript in a chemical formula?

The letter or letters that represent an element are called its atomic symbol. The numbers appearing as subscripts in the chemical formula indicate the number of atoms of the element immediately before the subscript. If no subscript appears, one atom of that element is present

Explanation:

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Can I get brainliest?

i think it is d. e because the next one is igneous.

its first and third is your answer i did the qustion the fourth isnt right