The ion $\mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } ^ { 2 - }$ is called _____.

Question

Quizplus · Accepted Answer

The ion $\mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } ^ { 2 - }$ is called dichromate because it consists of two chromium atoms and seven oxygen atoms. The prefix "di-" indicates there are two chromium atoms, and the suffix "-ate" indicates that the ion has a negative charge and contains oxygen. Therefore, the correct answer is E: dichromate.

The Ion Cr2O72−\mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } ^ { 2 - }Cr2​O72−​

The Ion $\mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } ^ { 2 - }$