Question

true or false question
true or false: atomic mass does not always increase from left to right in the periodic table.
true
false
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Explanation:

In the periodic table, although atomic number increases from left - to - right, atomic mass does not always follow this trend due to the number of neutrons in atoms. For example, argon (Ar) has a higher atomic mass than potassium (K) despite potassium having a higher atomic number.

Answer:

True