Question

an ionic compound has the formula cu₃n. complete the table to determine the charge of the transition metal ion in this compound. enter a negative sign before negative numbers. positive numbers do not need a positive sign.

element	charge of one ion	total charge of ion(s) in compound*	number of ion(s) in compound*
nitrogen	yellow box	yellow box	yellow box

*in one formula unit

what is the name of this ionic compound?
yellow dropdown yellow dropdown yellow dropdown

Explanation:

Step1: Analyze Nitrogen Ion

Nitrogen (N) in ionic compounds often has a charge of -3 (nitride ion, $N^{3-}$). Number of N ions in $Cu_3N$ is 1. Total charge of N ions: $-3 \times 1 = -3$.

Step2: Analyze Copper Ion

Let charge of Cu ion be $x$. Number of Cu ions is 3. Total charge of Cu ions: $3x$. For neutral compound, total positive charge = total negative charge: $3x + (-3) = 0 \implies 3x = 3 \implies x = 1$. So charge of one Cu ion is +1, total charge of Cu ions: $1 \times 3 = 3$.

Step3: Name the Compound

Ionic compound naming: cation (copper(I)) + anion (nitride). So name is copper(I) nitride.

Answer:

(Table Completion):

• Copper: Charge of One Ion = 1, Total Charge of Ion(s) = 3, Number of Ion(s) = 3
• Nitrogen: Charge of One Ion = -3, Total Charge of Ion(s) = -3, Number of Ion(s) = 1