求1——20和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量1-20号元素和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量
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![求1——20和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量1-20号元素和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量](/uploads/image/z/873726-6-6.jpg?t=%E6%B1%821%E2%80%94%E2%80%9420%E5%92%8CMr%2CFe%2CCu%2CZn%2CAg%2CI%2CBa%2CPt%2CAu%2CHg%E7%9A%84%E8%BF%91%E4%BC%BC%E7%9B%B8%E5%AF%B9%E5%8E%9F%E5%AD%90%E8%B4%A8%E9%87%8F1-20%E5%8F%B7%E5%85%83%E7%B4%A0%E5%92%8CMr%2CFe%2CCu%2CZn%2CAg%2CI%2CBa%2CPt%2CAu%2CHg%E7%9A%84%E8%BF%91%E4%BC%BC%E7%9B%B8%E5%AF%B9%E5%8E%9F%E5%AD%90%E8%B4%A8%E9%87%8F)
求1——20和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量1-20号元素和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量
求1——20和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量
1-20号元素和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量求1——20和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量1-20号元素和Mr,Fe,Cu,Zn,Ag,I,Ba,Pt,Au,Hg的近似相对原子质量
Mr?!是Mn吗?
H:1.00794(7)
He:4.002602(2)
Li:6.941(2)
Be:9.012182(3)
B:10.811(7)
C:12.0107(8)
N:14.00674(7)
O:15.9994(3)
F:18.9984032(5)
Ne:20.1797(6)
Na:22.98976928(2)
Mg:24.3050(6)
Al:26.981538(2)
Si:28.0855(3)
P:30.973761(2)
S:32.066(6)
Cl:35.4527(9)
Ar:39.948(1)
K:39.0983(1)
Ca:40.078(4)
这就是前20号元素.
Mn:54.938045(5)
Fe:55.845(2)
Cu:63.546(3)
Zn:65.409(4)
Ag:107.8682(2)
I:126.90447(3)
Ba:137.327(7)
Pt:195.084(9)
Au:196.9665569(4)
Hg:200.59(2)
()中的数据是一个类似于“估读值”的不确定位;另,以上数据均进行了常见同位素的丰度平均!比如Cu就有Cu-63和Cu-65两种常见的稳定同位素,对这两种原子进行丰度平均后得出元素质量为63.546(3).请问楼主第一个是?好像您打错啦。不算第一个,依次是55.845,63.546,65.409,107.868,126.,904,137.327,195.078,196.966,200.59