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Name two elements in the modern periodic table that break Mendeléey's rule that the elements should be arranged in order of relative atomic mass. PLEASE I NEED THE ANSWER !
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Name two elements in the modern periodic table that break Mendeléey's rule that the elements should be arranged in order of relative atomic mass.

PLEASE I NEED THE ANSWER !

User Maziar Rumiani
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I think it’s tellurium and iodine but I’m not 100% sure
User Dave Challis
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