Which one of the following formulas of ionic compounds is the least likely to be correct?
A) NH4Cl
B) Ba(OH)2
C) Na2SO4
D) Ca2NO3
E) Cu(CN)2
Answer: D
Which one of the following formulas of ionic compounds is the least likely to be correct?
A) NH4Cl
B) Ba(OH)2
C) Na2SO4
D) Ca2NO3
E) Cu(CN)2
Answer: D