Question 1

Which of the following is the correct formula for dinitrogen pentoxide?

Accepted Answer

$\mathrm{N_2O_5}$

Question 2

What is the systematic name for the compound $\mathrm{P_4S_{10}}$?

Accepted Answer

Tetraphosphorus decasulfide

Question 3

Which rule is violated if you name $\mathrm{CO}$ as 'monocarbon monoxide'?

Accepted Answer

The prefix 'mono-' is not used for the first element.

Question 4

What is the correct name for $\mathrm{N_2O_3}$?

Accepted Answer

Dinitrogen trioxide

Question 5

Which of the following compounds is named correctly?

Accepted Answer

Sulfur hexafluoride ($\mathrm{SF_6}$)

Question 6

A chemist is working with a compound called 'dibromine heptasulfide.' What is its chemical formula?

Accepted Answer

$\mathrm{Br_2S_7}$

Question 7

Which of the following is the correct name for $\mathrm{CO_2}$?

Accepted Answer

Carbon dioxide

Question 8

If a compound is named 'tetraphosphorus pentasulfide,' what is its formula?

Accepted Answer

$\mathrm{P_4S_5}$

Question 9

Which of the following best explains why numerical prefixes are important in naming binary molecular compounds?

Accepted Answer

They indicate the exact number of each atom present in the compound.

Question 10

A student writes the name 'dinitrogen monoxide' for $\mathrm{N_2O}$. Is this correct, and why?

Accepted Answer

Yes, because 'di-' means two nitrogens and 'mono-' means one oxygen.

Question 11

Which of the following is the correct formula for tetraphosphorus pentasulfide?

Accepted Answer

$\mathrm{P_4S_5}$

Question 12

Which compound is correctly named according to the rules for binary molecular compounds?

Accepted Answer

Dichlorine monoxide ($\mathrm{Cl_2O}$)

Question 13

A scientist discovers a new compound with the formula $\mathrm{N_2S_5}$. What is the correct name for this compound?

Accepted Answer

Dinitrogen pentasulfide

Question 14

Which of the following is the correct name for $\mathrm{SO_3}$?

Accepted Answer

Sulfur trioxide

Question 15

A compound is named 'carbon monoxide.' What is its chemical formula?

Accepted Answer

$\mathrm{CO}$

Naming Binary Molecular Compounds

Study Guide - Practice Questions