Question

HUBY B) b only C) conly 2. Convert the energy value of 175.0 Joules (J) to calories (cal). (I cat. A) 0.1750 cal. B) 0.5230 C) 732.2 cal. D) 29.88 cal. alories (cal). (I cal. = 4.184J D) 29.88 cal. E) 41.83 cal. E) Cl (1) D) CH (8) _3. Of the following. AH is zero for A) Fe (1) B) Al(s) C) 02 (8) D) Cl(s) --4. Which of the following sets of subshells is in the correct order from low to high ents multi-electron atom. A) Is, 2p, 2s B) 2s 2p. 2d C) 45. 4p. 4d D) 45, 3d, 5s E ) 35, 3p. 45 V to high energy for a 5. The reaction 2Al2O3(s) + 4Al(s) + 302 (g) AH = +3351 kJ and therefore heat is by the reaction. A) endothermic, released B) endothermic, absorbed C) exothermic, released D) exothermic, absorbed E) thermoneutral, neither released nor absorbed Fill in the blank questions (4 pts each) 6. A certain chemical process has a q = -1256 kJ. The chemical process in reverse has a 7. Which subshell (s. p. d orf) has the lowest energy in the n = 2 shell. - 8. What ion with -1 charge has the electron configuration 1s 2s 2p? * 9. How many electrons can ap subshell contain? * 10. Which atom is largest: Li, Be, B, or FOB O 11. Which atom is largest: Li, Na, K, or Cs? 12. How many electrons can then = 3 shell contain? 13. For hydrogen atom, the n=2 shell has how many degenerate orbitals? 14. How many unpaired electrons are in an fluorine atom? One ap

Answer 1

2) d) cal 4184 T Calome 1Taue = 4.184 TS Joue: 41-83 calone 75 4.184 3) db) AH (heat or enthalpy 04 formahon) fors ALls) 1S 22Y0 At(S) is in its standerd 6tate AS has enthalpy of formahun and Rero, as the re is no change invo Ived in their formathon (4) CC) (d)e) 4P Eherg for a m multele ctron system Subshell 45 3P 35 4s< 4p 4d 4 s< 3d 5s 3s< 3p<4s 5Xb) Endothermic absorbed 4H SO Reachon is an endothermic meaution. Hence energ is absurbed

(6) 9E-1256 kj for achemical process chemical Process reverse for 1o-,b 1256 KJ C-1256 KI)= 7) for n 2 Strbkhetts पए pessibte lowest energ has the Energy of subsheu vemes Sepe df as ame possible 2s and 2p Subshells and for n=2 Ony two has the lowest Energ hence C8 has it has gaired an electon 1on change This Implies that 1s 2s22ps actual configurachon of neutral atom the given electronic Confguretion is of fluon ne F.. (on is C9) P Subshell 6 electrons Contain can Size decreases in a penod Li has largest Si3e As

1) we go in a group as ncreases as size CS has largest S1ze daon 12) Subshell's for ne 3 3s, BP ard 3d n=3 ame 2 electrons can contain Lohich S-Subshet has Oobital 6 electnons. 3 orbitals ohich can Contain has P-Subshell ohIch can 10 electnons Contain d-subshell bas 5 18 elechens 10t6 +2 Total Electrons= C13) in Hydogen atom n2 degenerauy can be caludate Here degenerate obitals n2 4 n=2 4 orbitals ame degenerate which incuuole one 2s Oobtal cmd tmee 2p orbtal Is225 2ps Fluorine atom- L 1L 1 4L 1L unpaired electmon only one
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