Question

Write the formula, including the charge for each of the following polyatomic ions :

a. nitrite b. sulfite

c. hydroxide d. acetate

Short answer

a. The formula of nitrite is${\mathrm{NO}}_2^{-}$

b. The formula of sulfite is${\mathrm{SO}}_3^{2-}$

c. The formula of hydroxide is${\mathrm{OH}}^{-}$

d. The formula of acetate is${\mathrm{C}}_2{\mathrm{H}}_3{\mathrm{O}}_2^{-}$

Step-by-step solution

Part (a) Step 1 : Given information

We have to write the formula of nitrite including charge.

Part (a) Step 2 : Simplification

• We know that nitrite is composed of$\mathrm{N}$(nitrogen) and$\mathrm{O}$(oxygen)
• So, the Chemical formula of nitrite is ${\mathrm{NO}}_2^{-}$
  

Part (b) Step 1 : Given information

We have to write the formula of sulfiteincluding charge.

Part (b) Step 2 : Simplification

• We know that sulfite is composed of$\mathrm{S}$(Sulphur) and$\mathrm{O}$(oxygen)
• So, the Chemical formula of sulfite is ${\mathrm{SO}}_3^{2-}$
  

Part (c) Step 1 : Given information

We have to write the formula of hydroxide including charge.

Part (c) Step 2 : Simplification

• We know that hydroxide is composed of $\mathrm{H}$(hydrogen) and$\mathrm{O}$(oxygen)
• So, the Chemical formula of hydroxide is ${\mathrm{OH}}^{-}$
  

Part (d) Step 1 : Given information

We have to write the formula of acetate including charge.

Part (d) Step 2 : Simplification

• We know that acetate is composed of $\mathrm{C}$(carbon) , $\mathrm{H}$(hydrogen) and $\mathrm{O}$(oxygen)
• So, the Chemical formula of acetate is ${\mathrm{C}}_2{\mathrm{H}}_3{\mathrm{O}}_2^{-}$