现有A、B、C、D四种短周期元素,它们的原子序数依次增大,D元素原子最外层电子数是次外层电子数的三倍。A、B

素原子的最外层电子数之和与C元素原子的最外层电子数相等,A能分别与B、C、D形成电子总数相等的分子,且A与D形成的化合物在常温条件下为液态。(1)A与C两种元素可形成多种... 素原子的最外层电子数之和与C元素原子的最外层电子数相等,A能分别与B、C、D形成电子总数相等的分子,且A与D形成的化合物在常温条件下为液态。(1)A与C两种元素可形成多种化合物分子,其中CA3的化学式为__;C2A4的电子式为__(2)B与D可形成2种常见化合物,其中一种化合物BD2与A2D反应的化学方程式为__. 展开
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A:H B:C C:N D:O
CA3的化学式为:NH3.B2A4的电子式为:CH2=CH2.电子式写不了.
化合物BD2与A2D反应的化学方程式为:CO2+H2O===H2CO3
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D元素原子最外层电子数是次外层电子数的三倍,因此D原子序数为2+6=8,即氧。A元素为氢,C元素为碳,B为铍。剩下的打字都不好打啊。。。
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Hypotensive effect of verapamil Study

. 2 Determination of precision drawing car products 25m1. Purchase 100ml flask. And diluted with distilled water to the carved foot. Shake well. Dilution of precision ai lu taken to another 100ml 5ml volumetric flask. Liu distilled water diluted to the degree,asics australia, shake. Spectrophotometer capsule according to law. With a Shimadzu uV ? 265 dual-wavelength scanning at 200 ~ 400nm Department, the largest ai 铡 received wavelength 229am. In this determination of absorption. 1.3 Animal Health widowed white rabbit. Either sex,mulberry bags, weighing 1.7 ~ 2.5kg. 2 Methods and Results 2.1 Self-made 2.7 × 10 -,tory burch shoes, 3 × 10-5 × 10 - '. 0. o1tool ? L is called a solution of four different concentrations of rabbit eyeful.Pressure measured after tough eyes. Be instilled in the right eye and the corresponding solution concentration of verapamil capsule 5O1. The left eye as control eyes. Without any treatment. Followed by the after drug 0.5.1,herve leger outlet,36 ah. Bh eyes intraocular pressure measurement.0.5h intraocular pressure began to decrease after treatment. 3h bottom out.0.01mo [? L verapamil solution f of the bow from the rabbit intraocular pressure was not significant. Statistical analysis using the test and F test. 2.2 with 2.7 × 10tool ? L verapamil and n. 6 × 10tool ? L-. Timolol on intraocular pressure in rabbits,herve leger uk, C value (coefficient of aqueous lu Chang, IOP dropped to the lowest in the guillotine), F value (housing water flow), PO / C (eye tough pressure coefficient of aqueous Zhang Chang ) was not significantly King; ring (P> 0_05). Local Direct with different concentrations of verapamil solution later. Medication between the eye and the control with the C value, value. PO / C was significantly different (P 0.O5). Free 12 + 2.4 widowed were the right eye seep into the 2.7 × 10ml ? L and 3 × 10 a tool ? L verapamil solution of a transition soL. Jing try using colorimetric determination of phenol in aqueous total protein concentration. Two reactors are so magic rabbit aqueous humor from the vocal sac of total protein decreased CP <0-05). 2.5 few rabbits 7. Clearance into the right eye 3 × 10tool ? L verapamil for 50 with the right control.10rain after the extraction of the aqueous humor of about 0.2ml, Gan Li mpm-4 with a fluorescence spectrophotometer imaginary cricket Determining the fluorescence intensity of aqueous humor. Medication with the leisure time of aqueous fluorescence intensity was significantly lower than control eyes closed (P <o.05) 2.6 by Juan Che depression test and hemolysis test method confirmed. Verapamil-free solution on with Che Fu. No hemolysis.3 discuss our experimental results and Abclson a double Hu, ie, IOP treatment is declining, stable IOP also appears on a certain way down the capsule. Abclson that this dual nature. not because of drugs through the conjunctiva or the nasal absorption bait Road. After base body and work, may be the result of autonomic regulation. In view of our experiments are to this bilateral Village. 0.olmot ? L verapamil punish the degree of intensity as low. The reason may be the degree of Xuan Tan selected concentration of drug required for maximal effect, Kazuya increase drug implicated degrees. effect is not further increased.
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