The formula for calcium nitride is?

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${Ca}_{3} N$

${Ca}_{2} N$

${Ca}_{2} N_{2}$

${Ca}_{3} N_{2}$

answer is D.

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Detailed Solution

As we already know, nitride is represented by the symbol N^3- and has an oxidation state of -3. On the basis of this balanced oxidation state, we may formulate the calcium nitride formula.

As is well known, oxidation states essentially represent the fictitious charge that is applied to an atom based on the acquisition or loss of electrons necessary to establish a chemical bond.
It has been discovered that an element's total number of electrons added or withdrawn to get to its current state equals the oxidation number of an atom.

Since calcium nitride is an ionic compound, we may express it both in dissociated and balanced form as follows: $C a^{2 +}$ and $N^{3 -}$ .

It has been discovered that calcium and nitrogen are both monatomic in nature.

Therefore, on the basis of this information we can write the formula for calcium nitride as $C a_{3} N_{2}$ , based on their oxidation states.

Hence, the correct option is (D).

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