Four units of monoatomic substance A combines with one unit diatomic substance B to make the triatomic substance C. Two units of triatomic substance C combine with one unit of diatomic substance B to make substance D. Place the letter of each substance next to the symbol that best describes its atomic or molecular structure.
A)A, D, B, C
B)C, A, B, D
C)D, B, A, C
D)B, D, A, C

Question

Four units of monoatomic substance A combines with one unit diatomic substance B to make the triatomic substance C. Two units of triatomic substance C combine with one unit of diatomic substance B to make substance D. Place the letter of each substance next to the symbol that best describes its atomic or molecular structure. 
A)A, D, B, C 
B)C, A, B, D 
C)D, B, A, C 
D)B, D, A, C

Quizplus · Accepted Answer

The Answer is C

Four Units of Monoatomic Substance a Combines with One Unit