




如果您无法下载资料,请参考说明:
1、部分资料下载需要金币,请确保您的账户上有足够的金币
2、已购买过的文档,再次下载不重复扣费
3、资料包下载后请先用软件解压,在使用对应软件打开
1、cWhichofthefollowingbelongstophosphate?(sodiumphosphite) (a)PH3(b)Na3PO3(c)Na3PO4(d)P 2、b1Hand2Hare____andoccupythesamepositioninperiodicTable. (a)isomers(b)isotopes(c)redoxbodies(d)amphotericcompounds 3、dThe____ofacarbonis12 (a)theweightofmolecule(b)molecularnumber (c)theweightofatom(d)atomicweight 4、Whichofthefollowingbelongtonitrate?C (a)NH3(b)KNO3(c)KNO2(d)NO 5、Whichofthefollowingbelongstosecondaryamine?B 4、Thenumberofoutmostelectronincarbonatomis_C_. (a)1(b)2(c)4(d)6 5、InreactionH2+CuO—H2O+Cu,__B__isreduced. (a)H2(b)CuO(c)Cu(d)H2O 6、Whichofthefollowingischarged?_C_ (a)atom(b)molecule(c)proton(d)neutron 7、WhofirstpresentedPeriodicTableofelements?C (a)Democritus(b)Boyle(c)Mendeleev(d)Dalton 8、Whichofthefollowingisclassifiedintoamine?B (a)NH3(b)CH3NH2(c)NaNH2(d)N2 9、Thesubstancesontheleftsideofthechemicalequationareknownas__d_. (a)reactant(b)reactor(c)reductant(d)reaction 10、Whofirstpresentthemodelofanatomin1900s?b (a)Plato(b)Dalton(c)Mendeleev(d)Boyle 11、Whichofthefollowingbelongstonitrite?b (a)HNO2(b)KNO2(c)Mg3N2(d)NH3 12、Whichofthefollowingbelongstometal?b (a)selenium(b)sodium(c)Tellurium(d)Helium 13、dTheelementaryparticleof____isuncharged.d (a)proton(b)electron(c)ion(d)neutron 14、dBrominehas____electronsinitsoutermostenergylevel.d (a)2(b)3(c)8(d)7 15、aWhichofthefollowingisnon-metal? (a)chlorine(b)lead(c)copper(d)mercury 16、aTheatomicnumberofheliumis____. (a)2(b)4(c)3(d)0 17、dThehorizontalrowsoftheperiodictablearecalled____. (a)energylevel(b)groups(c)electronconfiguration(d)periods 18、aThesymbolforelementsilveris____. (a)Ag(b)Sn(c)Hg(d)Au 19、cTheatomicnumberofcarbonis____. (a)13(b)6(c)12(d)1 20、bWhichofthefollowingisinertelement? (a)hydrogen(b)helium(c)tellurium(d)potassium 21、cWhichofthefollowingbelongstohalogen? (a)carbon(b)lithium(c)fluorine(d)neon 22、aWhichofthefollowingbelongstonoblegas? (a)neon(b)potassium(c)iodine(d)lead 23、aWhichofthefollowingbelongstoalkalimetal? (a)silver(b)sodium(c)tellurium(d)bromine 24、bWhichofthefollowingbelongstometalhalide?

快乐****蜜蜂
实名认证
内容提供者


最近下载
一种胃肠道超声检查助显剂及其制备方法.pdf
201651206021+莫武林+浅析在互联网时代下酒店的营销策略——以湛江民大喜来登酒店为例.doc
201651206021+莫武林+浅析在互联网时代下酒店的营销策略——以湛江民大喜来登酒店为例.doc
用于空间热电转换的耐高温涡轮发电机转子及其装配方法.pdf
用于空间热电转换的耐高温涡轮发电机转子及其装配方法.pdf
用于空间热电转换的耐高温涡轮发电机转子及其装配方法.pdf
用于空间热电转换的耐高温涡轮发电机转子及其装配方法.pdf
用于空间热电转换的耐高温涡轮发电机转子及其装配方法.pdf
用于空间热电转换的耐高温涡轮发电机转子及其装配方法.pdf
论《离骚》诠释史中的“香草”意蕴.docx