Question

__2. Convert the energy value of 175.0 Joules (J) to calories (cal). (I cal. = 4.184) A) 0.1750 cal. B) 0.5230 C) 7322 cal. D) 29.88 cal. E) 41.83 cal. 3. Of the following. AH, is zero for A) Fe(1) B) AI () C) 02 (8) D) Cl: () E) Cl (1) 4. Which of the following sets of subshells is in the correct order from low to high energy for a multi-electron atom. A) Is, 2p, 25 B) 2, 2p. 2d C) 45, 4p, 4d D) 45, 3d, 55 E) 3s, 3p, 4s 5. The reaction 2Al2O, (s) - 4Al(s) + 302 (g) AH - +3351 kJ _, and therefore heat is by the reaction. A) endothermic, released B) endothermic, absorbed C) exothermie, 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 q” 7. Which subshell (s. p. d or 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 F? 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?

Answer 1

Answer :- € 175.0 J = 17500 Cal. = 41.826 Gl . Answer: 1E) 41-83 Gl 4.184 © and is bero for 1 B) Also Reasen! - Standard enthalpy of fermater af a substance in element ferm is always taken astero. © Arca : c) uѕ, че, ма ) Ansulr cie. sine stren= tue i reaction is endothermic heat is being absorbed. Answer: TB) endothermic, absorbed) Fill in the blanks :- 6- A certain chemical process has aq=-1256 kJ. The chimical process in reverse hes a q = 1+ 1250 1.

9. which subshell (S. 8. dorf) has the terrest-enersy is n=2 shell. s Reason: and Shell has only two subshell 25828 and nel is less for 25 & what is with - Charge has the election Configurations - 15²28²2pb ? TF1 9. How many electors Can a P- subshell contains? [6] lo which alom is lenght: Ii, Be, Borf? [2] Reason: along one period, size decreases 1. which atom is lengst: 2i, Na , korg? (Cs) - Reeson - On moving a group, size increases 12. How many electrons Can n=3 shall contain 2. [18] Reeson no. of e- in nou Shell = 222 B. for hydrogen atom, the n=2 Shell has how many degenerate arbitas ? A Reasons for H, 2S=2 Pn du Pz - energy 14. How many infand elections are in flourise atens? I Resom: 18² 28² 2p5 ( no ) пP