Tulu Dimtu General secondary School

Guyyaa 09/09/2016 A. L. I Mana Barumsaa Tulluu Diimtuu Waligalaa Sad. 2ffaa Barattoota kutaa 11ffaa hundaaf:- Sagantaan qormaata Miidii guyyaa gaafa 9/9/2016 sa'aatii 7:00 hanga sa'atii 8:45 jedhe ba'ee dogoggora ta'ee jira. Kanaafuu haruma(9/9/2016)ganama sa'atii 3:00 irraa kaasee waan itti fufuuf barattootni kutaa 11ffaa hundi mana barumsatti akka argamtan.

ማስታወቂያ: ለ 11ኛ ክፍል ታማሪዎች በሙሉ በ ዛሬው እለት (9/9/2016 ዓ. ም ) ከ 7:00 እስከ 8:45 ተብሎ የወጣ የ ፈተና ፕሮግራም ስህተት ሆኗል :: ስለዝ በዛሬዉ እለት በዚዉ ጧት ከ 3:00 ጀምሮ ፈተናው እንደምት ፈትኑ አዉቃችሁ በትምርት ቤቱ ግቢ እንዲት ገኑ እናሳስባለን ::

Chemistry Increasings or Decreasing Order

🔴 01. Melting point= Li > Na > K > Rb > Cs 🔴 02. Colour of the flame= Li-Red, Na-Golden, K-Violet, Rb-Red, Cs-Blue, Ca-Brick red, Sr-Blood red, Ba-Apple green 🔴 03. Stability of hydrides = LiH > NaH > KH > RbH> CsH 🔴 04. Basic nature of hydroxides= LIOH < NaOH < KOH < RbOH < CsOH 🔴 05. Hydration energy= Li> Na > K> Rb > Cs 🔴 06. Reducing character= Li > Cs > Rb > K > Na 🔴 07. Stability of +3 oxidation state= B> Al > Ga > In > T1 🔴 08. Stability of +1 oxidation state= Ga < In < TI 🔴 09. Basic nature of the oxides and hydroxides= B< Al< Ga < In < TI 🔴 10. Relative strength of Lewis acid= BF3 < BCl3 < BBr3 < BI3 🔴 11. Ionisation energy= B> Al <Ga > In <TI 🔴 12. Reactivity=C<Si< Ge < Sn <Pb 🔴 13. Metallic character= C < Si < Ge < Sn < Pb 🔴 14. Acidic character of the oxides= Co2 > SiO2 > Ge02 > SnO2 > PbO2 🔴 15. Reducing nature of hydrides= CH4 < SiH4  < GeH4  < SnH4 < PbH4 🔴 16. Thermal stability of tetrahalides= CCl4> SiCl4> GeCl4> SnCl4 > PbCl4 🔴 17. Oxidising character of M+4 species= GeCl4 < SnCl4 < PbCl4 🔴 18. Ease of hydrolysis of tetrahalides= SiCl4 < GeCl4 < SnCl4 < PbCI4 🔴 19. Acidic strength of trioxides= N203 > P2O3 > As2O3 🔴 20. Acidic strength of pentoxides= N2O2 > P2O2> As202 > Sb2O2 > Bi‌202 🔴 21. Acidic strength of oxides of nitrogen= N2O < NO <N2O3 <N2O4 < N2O5 🔴 22. Basic nature/ bond angle/ thermal stability and dipole moment of hydrides= NH3 > PH3 > AsH3 > SbH3 > BiH3 🔴 23. Stability of trihalides of nitrogen= NF3 > NCl3 > NBr3 🔴 24.Lewis base strength= NF3 <NCl3 <NBr3 < NI3 🔴 25. Ease of hydrolysis of trichlorides= NCl3 > PCI3 > AsCl3 > SbCl3 > BiCl3 🔴 26. Lewis acid strength of trihalides of P, As, and Sb=PCl3 > ASCl3 > SbCl3 🔴 27. Lewis acid strength among phosphorus trihalides PF3 > PCl3 > PBr3 > PI3 🔴 28. Melting and boiling point of hydrides= H2O > H2Te > H2Se >H2S 🔴 29. Volatility of hydrides= H2O < H2Te < H2Se < H2S 🔴 30. Reducing nature of hydrides= H2S < H2Se < H2Te 🔴 31. Covalent character of hydrides= H2O < H2S < H2Se < H2Te 🔴 32. The acidic character of oxides (elements in the same oxidation state)= SO2 > SeO2 > TeO2 > PoO2 SO3 > SeO3  > TeO3 🔴 33. Acidic character of oxide of a particular element (e.g. S)= SO < SO2 < SO3 SO2 > TeO2 > SeO2 > PoO2 🔴 34. Bond energy of halogens= Cl2 > Br2 > F2 > I2 🔴 35. Solubility of halogen in water = F2 > Cl2 > Br2 > I2 🔴 36. Oxidising power= F2 > Cl2 > Br2 > I2 🔴 37. Enthalpy of hydration of X ion= F- > Cl- > Br- >I- 🔴 38. Reactivity of halogens:= F> Cl> Br > I 🔴 39. Ionic character of M-X bond in halides = M-F > M-Cl > MBr > M-I 🔴 40. Reducing character of X ion:= I- > Br- > Cl- > F- 🔴 41. Acidic strength of halogen acids= HI > HBr > HCI > HF 🔴 42. Reducing property of hydrogen halides = HF < HCL < HBr < HI 🔴 43. Oxidising power of oxides of chlorine = Cl2O > ClO2 > Cl206 > Cl2O7 🔴 44. Decreasing ionic size= 02- > F- > Na+ > Mg2+ 🔴 45. Increasing acidic property= Na2O3 < MgO < ZnO< P205 🔴 46. Increasing bond length= N2 <02 < F2 < CL2 🔴 47. Increasing size= Ca2+ < Cl- < S2- 🔴 48. Increasing acid strength= HClO < HClO2 < HClO3 < HClO4 🔴 49. Increasing oxidation number of iodine= HI< I2 <ICl <HIO4 🔴 50. Increasing thermal stability= HOCl < HOClO < HOClO2 < HOClO3 SHARE 🤔SHARE ╔═══════════╝ ⇲ mesfin mekuria@GBBSS