Q. 6.49 - An Introduction to General, Organic, and Biological Chemistry

Question

Name each of the following molecular compounds: 

a. $N_2{O}_3$

b. $S{i}_{2}B{r}_6$

c. $P_4{S}_3$

d. $PC{l}_5$

e. $Se{F}_6$

Step-by-Step Solution

Answer

(a) The molecular compound is dinitrogen trioxide

(b) The molecular compound is disilicon hexabromide

(c) The molecular compound is tetraphosphorus trisulfide

(d) The molecular compound is phosphorus pentachloride

(e) The molecular compound is selenium hexafluoride

Part (a) Step 1: Given information

We need to find the molecular name of $N_2{O}_3$

Part (a) Step 2: Explanation

We know that,

The first nonmetal is $N$ i.e. nitrogen

And second nonmetal $O$ i.e. oxide

As the no. of atoms or subscript of nitrogen and oxide atom is $2$and $3$

Therefore, the compound is, dinitrogen trioxide  

Part (b) Step 1: Given information

We need to find the molecular name of $S{i}_{2}B{r}_6$

Part (b) Step 2: Explanation

We know that,

The first nonmetal is $Si$ i.e. silicon

And second nonmetal $Br$ i.e. bromide

As the no. of atoms or subscript of silicon and bromide atom is $2$ and $6$

Therefore, the compound is, disilicon hexabromide 

Part (c) Step 1: Given information

We need to find the molecular name of $P_4{S}_3$

Part (c) Step 2: Explanation

We know that,

The first nonmetal is $P$ i.e. phosphorus

And second nonmetal $S$ i.e. sulfide

As the no. of atoms or subscript of phosphorus and sulfide atom is $4$ and $3$

Therefore, the compound is, tetraphosphorus trisulfide

Part (d) Step 1: Given information

We need to find the molecular name of  $PC{l}_5$

Part (d) Step 2: Explanation

We know that,

The first nonmetal is $P$ i.e. phosphorus

And second nonmetal $Cl$ i.e. chloride

As the no. of atoms or subscript of chloride  atom is $5$ 

Therefore, the compound is, phosphorus tetrachloride

Part (e) Step 1: Given information

We need to find the molecular name of $Se{F}_6$

Part (e) Step 2: Explanation

We know that,

The first nonmetal is $Se$ i.e. selenium

And second nonmetal $F$ i.e. fluoride

As the no. of atoms or subscript of fluoride atom is $6$

Therefore, the compound is, selenium hexafluoride