'All 5 elements of the salt-producing halogen group end in these 3 letters (one element purifies drinking water)'
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PHYSICAL SCIENCE: All 5 elements of the salt-producing halogen group end in these 3 letters
All 5 elements of the salt-producing halogen group end in these 3 letters
All 5 elements of the salt-producing halogen group end in these 3 letters
PHYSICAL SCIENCE
-I-N-E
PHYSICAL SCIENCE