Question

question 22
4 pts
the compound ( mathrm{ca}left(mathrm{no}_{3}
ight)_{2} ) is named,
calcium nitrite
calcium(ii) nitrate
calcium dinitrate
calcium nitrate
dicalcium nitrate

Explanation:

• \(Ca\) is the symbol for calcium.
• \(NO_3^-\) is the nitrate ion.
• In ionic compound naming, for a metal (calcium here) and a polyatomic ion (\(NO_3^-\)), we simply combine the metal name and the polyatomic ion name.
• Calcium is a group 2 metal with a fixed charge (\(+ 2\)), so we don't need to use Roman numerals (eliminates “calcium(II) nitrate”).
• “Nitrite” is \(NO_2^-\), so “calcium nitrite” is incorrect.
• “Calcium dinitrate” and “dicalcium nitrate” are not the correct naming conventions for \(Ca(NO_3)_2\) as per ionic compound naming rules.

Answer:

calcium nitrate