Question

what is the name of this ionic compound? cr(no₃)₃ refer to a periodic table and a list of polyatomic ions. chromium(vi) nitrite chromium(iii) nitrite chromium(vi) nitrate chromium(iii) nitrate

Explanation:

• First, identify the polyatomic ion. The formula contains \(NO_3^-\), which is the nitrate ion (not nitrite, \(NO_2^-\)).
• Then, determine the oxidation state of chromium (\(Cr\)). In \(Cr(NO_3)_3\), since each \(NO_3^-\) has a charge of \(- 1\) and there are three \(NO_3^-\) ions, the total negative charge is \(-3\). For the compound to be neutral, \(Cr\) must have a charge (oxidation state) of \(+3\).

Answer:

chromium(III) nitrate