Question

Chem110 Name: Daily Problem(s) #39 2019 Given the following species (used in fertilizer), answer the following: Predict which mineral has the highest lattice energy (strongest interaction between ions) (pay attention to the charges, not the identity of the atoms: Higher charees I. a means a stronger interaction). ammonium nitrate NH4NO3 Name not given potassium oxide К-о Са:(РО) Show some wore here to justify Mour choice above: Give the best IUPAC name for Cas(PO4)2 b. Most negative (most favorable) EA II Sn Na. Work/logic Na Sn Highest 3rd (least favorable) IE Work: (show electron configurations here!) III Mg or Mg electron configuration: O electron configuration: ion(s) electron configuration(s): ion(s) electron configuration(s): Starting nvalue: Ending n value: Dr. Brosius recommendswriting the correct workh and waswers of the previous DP on the back of this current DP: Starting n value: Ending n value:

Answer 1

1. (a) K20 have à t ion NH4NO₂ have Nhytion But Ca3(PO4)2 have Ca 2+ ion. Here C, 2* have highest. charge offence, Caz(P04), have highest lattice energy. (by Caz(PO4)2 : Calcium phosphate

I Most negative EA : Nq___ Sn So Na [Ne] 3 st [Kr]552 40505p2 [Ne] 352 3p Least negative EA It EA is less negative Most negative EA because rather than than because need because gáin 2 electron gain electronit tends or gain 4 electron to to complete its complete its octet, to loose electron octete (* Those glem which gain less electron to complete its octet have most negative electron affinity (EA). 2. TT Higest 3 rd iz : _ (Mg) or o Mg electronicconfia o electronic confi. 15² 2s²2p6 352 182 252 2p 4 Toncs electron.confi. . Ion(s) electron confi. 152 25 226 1522522p2 Starting n value = 1 Starting n value = 1 Ending n value: 2 Ending a value s2 C Mg have filled3s orbital Co have partially filled up orbital so have highest 349 ZEz.) so have low 3rd IE3)