Question

The names of the compounds FeS, NaCl, NaOH, and Pb(CN)2 all end in the suffix

a. -ide.
b. -ite.
c. -ate.
d. -ic.

Answer 1

FeS- iron sulfide
NaCl- sodium chloride
NaOH- sodium hydroxide
Pb(CN)2- lead cyanide
They all end in the suffix -ide.

Answer 2

Answer is: a) -ide.

1) FeS is iron(II) sulfide. Iron has oxidation number +2 and sulfur has oxidation number -2.

2) NaCl is sodium chloride. Sodium has oxidation number +1 and chlorine has oxidation number -1. Sodium cholride is ionic compound, salt.

3) NaOH is sodium hydroxide. Hydroxide group has negative charge.

4) Pb(CN)₂ is lead(II) cyanide. Lead has oxidation number +2.