A．Ra衰變?yōu)镽n.要經(jīng)過1次衰變和1次衰變 【查看更多】

 

題目列表(包括答案和解析)

下列說法正確的是（ ）
A．Ra衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131029195606315593593/SYS201310291956063155935002_ST/1.png">Rn要經(jīng)過1次α衰變和1次β衰變
B．U衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131029195606315593593/SYS201310291956063155935002_ST/3.png">Pa要經(jīng)過1次α衰變和1次β衰變
C．Th衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131029195606315593593/SYS201310291956063155935002_ST/5.png">Pb要經(jīng)過6次α衰變和4次β衰變
D．U衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131029195606315593593/SYS201310291956063155935002_ST/7.png">Rn要經(jīng)過4次α衰變和4次β衰變

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下列說法正確的是（ ）
A．Ra衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131028203419780197762/SYS201310282034197801977004_ST/1.png">Rn要經(jīng)過1次α衰變和1次β衰變
B．U衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131028203419780197762/SYS201310282034197801977004_ST/3.png">Pa要經(jīng)過1次α衰變和1次β衰變
C．Th衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131028203419780197762/SYS201310282034197801977004_ST/5.png">Pb要經(jīng)過6次α衰變和4次β衰變
D．U衰變?yōu)?img src="http://thumb.1010pic.com/pic6/res/gzwl/web/STSource/20131028203419780197762/SYS201310282034197801977004_ST/7.png">Rn要經(jīng)過4次α衰變和4次β衰變

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下列說法正確的是

A．Ra衰變?yōu)?IMG height=25 src='http://thumb.1010pic.com/pic1/img/20091022/20091022150551002.gif' width=20>Rn要經(jīng)過1次α衰變和1次β衰變

B．U衰變?yōu)?IMG height=25 src='http://thumb.1010pic.com/pic1/img/20091022/20091022150551004.gif' width=20>Pa要經(jīng)過1次α衰變和1次β衰變

C．Th衰變?yōu)?IMG height=25 src='http://thumb.1010pic.com/pic1/img/20091022/20091022150551006.gif' width=19>Pb要經(jīng)過6次α衰變和4次β衰變

D．U衰變?yōu)?IMG height=25 src='http://thumb.1010pic.com/pic1/img/20091022/20091022150551002.gif' width=20>Rn要經(jīng)過4次α衰變和4次β衰變

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下列說法正確的是(    )
A.Ra衰變?yōu)?SUB>Rn要經(jīng)過1次α衰變和1次β衰變。
B.U衰變?yōu)?SUB>Pa要經(jīng)過1次α衰變和1次β衰變。
C.Th衰變?yōu)?SUB>Pb要經(jīng)過6次α衰變和4次β衰變。
D.U衰變?yōu)?SUB>Rn要經(jīng)過4次α衰變和4次β衰變。

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(1999年全國，3)下列說法正確的是?

(A)Ra衰變?yōu)?IMG align="absmiddle" height=25 src="http://thumb.1010pic.com/pic1/1898/img/02//73//98/189802739810000798/2.gif" width=20 v:shapes="_x0000_i1067">Rn要經(jīng)過1次α衰變和1次β衰變?

(B)U衰變?yōu)?IMG align="absmiddle" height=25 src="http://thumb.1010pic.com/pic1/1898/img/02//73//98/189802739810000798/4.gif" width=20 v:shapes="_x0000_i1069">Pa要經(jīng)過1次α衰變和1次β衰變?

(C)Th衰變?yōu)?IMG align="absmiddle" height=25 src="http://thumb.1010pic.com/pic1/1898/img/02//73//98/189802739810000798/6.gif" width=19 v:shapes="_x0000_i1071">Pb要經(jīng)過6次α衰變和4次β衰變?

(D) U衰變?yōu)?IMG align="absmiddle" height=25 src="http://thumb.1010pic.com/pic1/1898/img/02//73//98/189802739810000798/8.gif" width=20 v:shapes="_x0000_i1073">Rn要經(jīng)過4次α衰變和4次β衰變?

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