Divide radioactive into syllables: ra-di-o-ac-tive
Primary syllable stress: ra-di-o-ac-tive
Secondary syllable stress: ra-di-o-ac-tive
How to pronounce radioactive: rey-dee-oh-ak-tiv
How to say radioactive:
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1. What is a syllable?
2. How to count syllables.
3. How to divide into syllables.
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