Question

Complete the following table. Explain in your own words how the charges on ionic compounds are balanced. Determining charge. As in the previous table, the charges are balanced. We can determine the charges on individual ions because of the common oxidation state or because it is bonded to an ion for which the charge can be determined. Determine the charges on each of the atoms present in the following compounds. Complete the following table. Explain how the charge on each atom is determined.

Answer 1

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1St part 02- s2- N3- Nat Na F Na20 Na2s Na N Na Br AL3+ ARF Al203 Al2 S3 ALBB AQN CuFa Cuo Cus Cuz N2 CuBr2 2. Balaneed ot eRarges on ionie compounds There is two. methods kor balanced of eharge on ionie Compounds:- O The math way • make the total eharges equal 2ero eharge of Na is +) eharge olrfin- So, Balenee charge 1 x (+1) +1(-1)=0 eg; Na F The eriss eross method Take he eRarge of eaeh and make that number of and simplify ik needed A03t -> 2nd part charge on he anion (seeond element) eharge on Hhe Cation (firnt. element) Balanee eharges Compound +1 Known beeause-2, known because 2) + 1(-2) = 0 Nag s it is sulbide ion s2- in IA group +1 determined in -2, becawse 02- 2* +1 (-2)=0 last eolumn in oxide ion -3, determine as +2 Ynown because in IA group eharge ok Pzx 342)+2(x) - 0 Ca P2 followo -1 becuse ehloride Let efarge of Hgisx +2, determined as Folown Hgc2 iom. I() +2(-1) :o on becanse-1, el- is eRloride kcl 1(+1) + 1C-1) -0 TA group ion -2, beeawse s2- +4, determinedas LeUowa PbS2 Let thange o& Pb=X 1.x +21-2)=0 in sulfide ion w(+4)+2.(-2) = o

Determination ok eharge on each atom heneral proeedure for tinding of ehas ge on each aom- O find no. ob protons (t) 6 Find no. ols electron () [repernent negative no. and eleetrons to Sind eharrge. Add protons e.g:- Ca have 12 Psotons and 1o eleetron, The eharge eharge. no. ak Protont no of electron 12 +(-10) So, ca' fhave 4 2 2.