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1 सरकार में 29 लाख पद or post   खाली हैं, भर्ती or recruitment  करने के संसाधन or resources  नहीं हैं 2  आर्थिक आधार or financial and economic  basis   पर सरकारी नौकरियों में आरक्षण के गुब्बारे उड़ा दिए गए Shantanu Agrawal +918889684336 , +919919234299 agrrshantanu@gmail.com

1 There is slow down in WORLD ECONOMY 2 CHINA admitted Last year it had slowest growth rate of ECONOMY 3 ECONOMY का शीघ्र पतन हो रहा है Shantanu Agrawal +918889684336 , +919919234299 agrrshantanu@gmail.com

[23/01 08:45] Shantanu Agrawal: इस समय कौन सी POLITICAL PARTY का  शीघ्र    पतन  हो रहा है [23/01 08:50] Siddharth Bhu: Swapn dosh ho raha hai kuchh ko to ki woh sapne me jeet jaate hai aur jab aankh khulti hai to pant me chhechhaledar [23/01 09:05] Shantanu Agrawal: 🌺🌺🌺 [23/01 09:06] Bhola Chaurasia: Prof tumko to nhi ho raha [23/01 09:07] Shantanu Agrawal: No [23/01 09:08] Shantanu Agrawal: *जल्दी थक जाते हैं* हमको नही हो रहा है  [23/01 08:50] Siddharth Bhu: Swapn dosh ho raha hai kuchh ko to ki woh sapne me jeet jaate hai aur jab aankh khulti hai to pant me chhechhaledar [23/01 09:05] Shantanu Agrawal: 🌺🌺🌺 [23/01 09:06] Bhola Chaurasia: Prof tumko to nhi ho raha [23/01 09:07] Shantanu Agrawal: No [23/01 09:08] Shantanu Agrawal: *जल्दी थक जाते हैं* हमको नही हो रहा है

my feelings Discussion on MAGNETIC properties of metal January 17, 2019 Iron has unpaired electrons and it is attracted by magnet Sodium and potassium have unpaired electrons but why they are not attracted by magnet ........ I have guessed a reason  but I am not sure whether I am right  or  wrong Let us start OUR   discussion 1 VALENCE electrons of a metal that we see in electronic configuration  do not stay with  the  atom of metal. 2 Metal is a collection of  positive charged ions surrounded by a sea of free electrons 3 Electronic configuration of iron is 4s2 , 3d6 Crystal of iron is a collection of ions with Electronic configuration 3s2, 3d6 In this ion 3d has 4 unpaired electrons This could be the reason for iron to be attracted towards magnet 4 Electronic configuration of sodium is 3s1, 2p6 Crystal of sodium  is a collection of ions with Electronic configuration 2s2, 2p6  THIS ion does NOT ...

Iron has unpaired electrons and it is attracted by magnet Sodium and potassium have unpaired electrons but why they are not attracted by magnet ........ I have guessed a reason  but I am not sure whether I am right  or  wrong Let us start OUR   discussion 1 VALENCE electrons of a metal that we see in electronic configuration  do not stay with  the  atom of metal. 2 Metal is a collection of  positive charged ions surrounded by a sea of free electrons 3 Electronic configuration of iron is 4s2 , 3d6 Crystal of iron is a collection of ions with Electronic configuration 3s2, 3d6 In this ion 3d has 4 unpaired electrons This could be the reason for iron to be attracted towards magnet 4 Electronic configuration of sodium is 3s1, 2p6 Crystal of sodium  is a collection of ions with Electronic configuration 2s2, 2p6  THIS ion does NOT  have  unpaired electrons This could be the reason for sodium  to NO...

1  in the  IRON CARBON DIAGRAM Why solubility of carbon in iron decreases with increase in temperature ? 2 Pearlite has different % of  cementite and ferrite Why cementite and ferrite are of equal length  in pearlite ?  3 In the IRON CARBON DIAGRAM delta ferrite exists at higher temperature as compared to austenite. Delta ferrite has  packing efficiency of 68 % and austenite has packing efficiency of 74 %. In the IRON CARBON DIAGRAM Why solubility of carbon in delta ferrite is less than austenite  ? 4 Write electronic  configuration of iron, nickel and copper Iron and nickel have more VALENCE electrons than copper. Iron and nickel have more FREE electrons than copper. WHY copper has higher ELECTRICAL CONDUCTIVITY than iron and NICKEL ? 5 What is the BRAVAICE LATTICE for a diamond cubic unit cell  ? 6 How are the atoms of iron and carbon arranged  in a unit cell of cementite 7 Iron has unpaired electrons and it i...

1  in the  IRON CARBON DIAGRAM Why solubility of carbon in iron decreases with increase in temperature ? 2 Pearlite has different % of  cementite and ferrite Why cementite and ferrite are of equal length  in pearlite ?  3 In the IRON CARBON DIAGRAM delta ferrite exists at higher temperature as compared to austenite. Delta ferrite has  packing efficiency of 68 % and austenite has packing efficiency of 74 %. In the IRON CARBON DIAGRAM Why solubility of carbon in delta ferrite is less than austenite  ? 4 Write electronic  configuration of iron, nickel and copper Iron and nickel have more VALENCE electrons than copper. Iron and nickel have more FREE electrons than copper. WHY copper has higher ELECTRICAL CONDUCTIVITY than iron and NICKEL ? 5 What is the BRAVAICE LATTICE for a diamond cubic unit cell  ? 6 How are the atoms of iron and carbon arranged  in a unit cell of cementite 7 Iron has unpaired electrons and it i...