Question

using the \criss - cross\ method and your oxidation number chart, choose the correct compound below
chart with oxidation numbers
calcium (ca) bonding with nitrate=(no3) oxidation #= 3-
a ca2(no3)
b ca(no3)
c ca3(no3)2

Explanation:

Step1: Determine the oxidation state of calcium

Calcium (Ca) is in group 2 of the periodic table, so its oxidation state is \(+ 2\).

Step2: Determine the oxidation state of nitrate

The nitrate ion \((NO_{3}^{-})\) has an oxidation state of \(-1\).

Step3: Apply the criss - cross method

Using the criss - cross method, we take the absolute value of the oxidation states of the two ions. For \(Ca^{2 +}\) and \(NO_{3}^{-}\), we get \(Ca(NO_{3})_{2}\).

Answer:

B. \(Ca(NO_{3})_{2}\)