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What is the name fiven to the family of elements having 7 valence electrons? (7 letters)
A natural attraction
(8 letters)
Discoverer of the noble gases (6 letters
Oxygen and Hydrogen are examples of (5 letters)
Refers to elements of the sixth period ( 4 letters)
A natural attraction
(8 letters)
Discoverer of the noble gases (6 letters
Oxygen and Hydrogen are examples of (5 letters)
Refers to elements of the sixth period ( 4 letters)