Question

question 30 of 39
determine the name or formula for each polyatomic ion.
formula: \\(\ce{co_3^{2-}}\\) \t name: \\(\boxed{}\\) ion
name: nitrite ion \t formula: \\(\boxed{}\\)
name: nitrate ion \t formula: \\(\boxed{}\\)
formula: \\(\ce{cn^-}\\) \t name: \\(\boxed{}\\) ion

Explanation:

For the formula $\boldsymbol{\ce{CO_3^{2-}}}$:

Step1: Recall polyatomic ion names

The polyatomic ion with formula $\ce{CO_3^{2-}}$ is known as the carbonate ion. This is a common polyatomic ion where carbon is bonded to three oxygen atoms and has a -2 charge.

Step1: Recall nitrite ion formula

The nitrite ion has the formula $\ce{NO_2^-}$. The suffix "-ite" for oxyanions typically indicates one less oxygen atom than the "-ate" form (nitrate, $\ce{NO_3^-}$) and a -1 charge.

Step1: Recall nitrate ion formula

The nitrate ion has the formula $\ce{NO_3^-}$. The suffix "-ate" for oxyanions of nitrogen with three oxygen atoms and a -1 charge is the standard formula for nitrate.

Answer:

carbonate

For the name "nitrite ion":