XF 3 consists of 65% F by mass. The atomic mass of the element X must be

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XF3 consists of 65% F by mass. The atomic mass of the element X must be 

(a) 8 u; 

(b) 11u; 

(c) 31 u; 

(d) 35 u.

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General Chemistry Principles And Modern Applications

ISBN: 9780132931281

11th Edition

Authors: Ralph Petrucci, Jeffry Madura, F. Herring, Carey Bissonnette

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