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QuestionWhat is the charge on the anion in lithium nitride formed from Li metal and N2\mathrm{N}_{2}? A) 3+3+ B) 2+2+ C) 1+1+ D) 2−2- E) 3−3-

Studdy Solution

STEP 1

Assumptions1. The compound formed is lithium nitride. . Lithium nitride is a binaryionic compound composed of lithium (Li) and nitrogen ().
3. In anionic compound, the total positive charge must balance the total negative charge.

STEP 2

First, we need to know the charge of lithium in the compound. Lithium is a group1 element in the periodic table, and it typically forms a 1+1+ ion.
Charge of Li=+1Charge\, of\, Li = +1

STEP 3

Next, we need to know the formula of lithium nitride. Lithium nitride is Li3\mathrm{Li}_{3}\mathrm{}, which means there are three lithium ions for every nitrogen ion in the compound.

STEP 4

Now, we can calculate the total positive charge in the compound. Since there are three lithium ions each with a charge of +1+1, the total positive charge is 3+3+.
Total positive charge=Number of Li ionstimesCharge of LiTotal\, positive\, charge = Number\, of\, Li\, ions \\times Charge\, of\, LiTotal positive charge=3times+1=+3Total\, positive\, charge =3 \\times +1 = +3

STEP 5

In anionic compound, the total positive charge must balance the total negative charge. Therefore, the charge on the nitrogen ion must be 3−3- to balance the 3+3+ charge from the three lithium ions.
Charge on N=−Total positive chargeCharge\, on\, N = - Total\, positive\, chargeCharge on N=−(+3)=−3Charge\, on\, N = - (+3) = -3So, the charge on the anion (nitrogen) in lithium nitride is 3−3-.

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