1-26 Read and write formulas of binary compounds

1-26-1. Which of the following is the correct name for PCl₅?
A. phosphorus chloride, B. phosphorus chlorine,
C. phosphorus pentachlorine, D. phosphorus pentachloride

1-26-2. Which of the following is the correct name for MgCl₂?
A. magnesium chloride, B. magnesium dichloride,
C. magnesium chlorine, D. magnesium dichlorine

1-26-3. Which of the following is the correct formula for dinitrogen tetroxide?
A. NO, B. N₂O₃, C. N₂O₄, D. NO₂

1-26-4. Which of the following is the correct name for Na₂S?
A. sodium sulfide, B. disodium sulfide,
C. sodium sulfite, D. sodium sulfate

1-26-5. Which of the following is the formula for iron(III) sulfide?
A. FeS, B. Fe₃S, C. Fe₂S₃, D. Fe₃S₂

1-26-6. Which of the following is the formula for cobalt(II) chloride?
A. CoCl, B. CoCl₂, C. Co₂Cl, D. Co₂Cl₂

1-26-7. Which of the following is correct name for CuCl₂?
A. copper(II) chloride, B. copper(I) chloride,
C. copper chloride(II), D. copper(I) dichloride