raja krishna memon is a good director and hi do his work very nicely. akashy kumar for this movie is very good and hi is very good star. i like this movie and like the war in the movie also. i wish all the best for akashy and all the film stars for his work .
posted by : narender chauhan on 13 feb 2016
average
supar hit movie of akshyaeryllium, 4be general properties name, symbol beryllium, be appearance white-gray metallic pronunciation /b��r�li�m/ b�-ril-ee-�m beryllium in the periodic table – ↑ be ↓ mg lithium← beryllium → boron atomic number (z) 4 group, block group 2 (alkaline earth metals), s-block period period 2 element category alkaline earth metal standard atomic weight (�) (ar) 9.0121831(5)[1] electron configuration [he] 2s2 per shell 2, 2 physical properties phase solid melting point 1560 k (1287 �c, 2349 �f) boiling point 2742 k (2469 �c, 4476 �f) density near r.t. 1.85 g/cm3 when liquid, at m.p. 1.690 g/cm3 critical point 5205 k, mpa (extrapolated) heat of fusion 12.2 kj/mol heat of vaporization 292 kj/mol molar heat capacity 16.443 j/(mol�k) vapor pressure p (pa) 1 10 100 1 k 10 k 100 k at t (k) 1462 1608 1791 2023 2327 2742 atomic properties oxidation states +2, +1[2] (an amphoteric oxide) electronegativity pauling scale: 1.57 ionization energies 1st: 899.5 kj/mol 2nd: 1757.1 kj/mol 3rd: 14,848.7 kj/mol (more) atomic radius empirical: 112 pm covalent radius 96�3 pm van der waals radius 153 pm miscellanea crystal structure hexagonal close-packed (hcp) speed of sound thin rod 12,890 m/s (at r.t.)[3] thermal expansion 11.3 �m/(m�k) (at 25 �c) thermal conductivity 200 w/(m�k) electrical resistivity 36 n��m (at 20 �c) magnetic ordering diamagnetic young's modulus 287 gpa shear modulus 132 gpa bulk modulus 130 gpa poisson ratio 0.032 mohs hardness 5.5 vickers hardness 1670 mpa brinell hardness 590–1320 mpa cas number 7440-41-7 history discovery louis nicolas vauquelin (1797) first isolation friedrich w�hler & antoine bussy (1828) most stable isotopes of beryllium iso na half-life dm de (mev) dp 7be trace 53.12 d � 0.862 7li � 0.477 – 9be 100\\\% 9be is stable with 5 neutrons 10be trace 1.36�106 y �− 0.556 10b beryllium is a chemical element with symbol be and atomic number 4. it is created through stellar nucleosynthesis and is a relatively rare element in the universe. it is a divalent element which occurs naturally only in combination with other elements in minerals. notable gemstones which contain beryllium include beryl (aquamarine, emerald) and chrysoberyl. as a free element it is asteel-gray, strong, lightweight and brittle alkaline earth metal. beryllium improves many physical properties when added as analloying element to aluminium, copper (notably the alloy beryllium copper), iron and nickel.[4] tools made of beryllium copper alloys are strong and hard and do not create sparks when they strike a steel surface. in structural applications, the combination of high flexural rigidity, thermal stability, thermal conductivity and low density (1.85 times that of water) make beryllium metal a desirable aerospace material for aircraft components, missiles, spacecraft, and satellites.[4] because of its low density and atomic mass, beryllium is relatively transparent to x-rays and other forms of ionizing radiation; therefore, it is the most common window material for x-ray equipment and components of particle physics experiments.[4] the high thermal conductivities of beryllium and beryllium oxide have led to their use in thermal management applications. the commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis.[5] contents [hide] 1 characteristics 1.1 physical properties 1.2 nuclear properties 1.3 isotopes and nucleosynthesis 1.4 occurrence 2 production 3 chemical properties 4 history 4.1 etymo
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Updated on Friday, July 3, 2015 | 8:13:32 PM
