How to Say "atomic-level" in Spanish
The Spanish word for “atomic-level” is “molecular” — B2 level.

Examples
Estamos estudiando la estructura molecular de las proteínas.
We are studying the molecular structure of proteins.
La gastronomía molecular utiliza la ciencia para crear texturas nuevas.
Molecular gastronomy uses science to create new textures.
El biólogo explicó el proceso a nivel molecular.
The biologist explained the process at a molecular level.
One Form for All
This word stays the same whether the thing it describes is 'masculine' (like 'el peso') or 'feminine' (like 'la estructura'). You don't need to change the ending to 'a'.
Placement is Key
In Spanish, describing words like this almost always come AFTER the object they describe. Say 'biología molecular,' not 'molecular biología'.
Avoid adding an 'a'
Mistake: “La estructura molecula.”
Correction: La estructura molecular. Because the word ends in 'r', it doesn't change its ending for feminine words.
Related Translations
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