0.13 Half-lives for several radioactive isotopes

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Half-Lives for Several Radioactive Isotopes
Isotope	Half-Life y = years, d = days, h = hours, m = minutes, s = seconds	Type of Emission E.C. = electron capture, S.F. = Spontaneous fission	Isotope	Half-Life y = years, d = days, h = hours, m = minutes, s = seconds	Type of Emission E.C. = electron capture, S.F. = Spontaneous fission
$_{6}^{14} C$	5730 y	$(β^{−})$	$_{83}^{210} Bi$	5.01 d	$(β^{−})$
$_{7}^{13} N$	9.97 m	$(β^{+})$	$_{83}^{212} Bi$	60.55 m	$(α or β^{−})$
$_{9}^{15} F$	4.1 $\times$ 10 ⁻²² s	$(p)$	$_{84}^{210} Po$	138.4 d	$(α)$
$_{11}^{24} Na$	15.00 h	$(β^{−})$	$_{84}^{212} Po$	3 $\times$ 10 ⁻⁷ s	$(α)$
$_{15}^{32} P$	14.29 d	$(β^{−})$	$_{84}^{216} Po$	0.15 s	$(α)$
$_{19}^{40} K$	1.27 $\times$ 10 ⁹ y	$(β or E . C .)$	$_{84}^{218} Po$	3.05 m	$(α)$
$_{26}^{49} Fe$	0.08 s	$(β^{+})$	$_{85}^{215} At$	1.0 $\times$ 10 ⁻⁴ s	$(α)$
$_{26}^{60} Fe$	2.6 $\times$ 10 ⁶ y	$(β^{−})$	$_{85}^{218} At$	1.6 s	$(α)$
$_{27}^{60} Co$	5.27 y	$(β^{−})$	$_{86}^{220} Rn$	55.6 s	$(α)$
$_{37}^{87} Rb$	4.7 $\times$ 10 ¹⁰ y	$(β^{−})$	$_{86}^{222} Rn$	3.82 d	$(α)$
$_{38}^{90} Sr$	29 y	$(β^{−})$	$_{88}^{224} Ra$	3.66 d	$(α)$
$_{49}^{115} In$	5.1 $\times$ 10 ¹⁵ y	$(β^{−})$	$_{88}^{226} Ra$	1600 y	$(α)$
$_{53}^{131} I$	8.040 d	$(β^{−})$	$_{88}^{228} Ra$	5.75 y	$(β^{−})$
$_{58}^{142} Ce$	5 $\times$ 10 ¹⁵ y	$(α)$	$_{89}^{228} Ac$	6.13 h	$(β^{−})$
$_{81}^{208} Tl$	3.07 m	$(β^{−})$	$_{90}^{228} Th$	1.913 y	$(α)$
$_{82}^{210} Pb$	22.3 y	$(β^{−})$	$_{90}^{232} Th$	1.4 $\times$ 10 ¹⁰ y	$(α)$
$_{82}^{212} Pb$	10.6 h	$(β^{−})$	$_{90}^{233} Th$	22 m	$(β^{−})$
$_{82}^{214} Pb$	26.8 m	$(β^{−})$	$_{90}^{234} Th$	$24.10 d$	$(β^{−})$
$_{83}^{206} Bi$	6.243 d	$(E . C .)$	$_{91}^{233} Pa$	27 d	$(β^{−})$
$_{92}^{233} U$	1.59 $\times$ 10 ⁵ y	$(α)$	$_{96}^{242} Cm$	162.8 d	$(α)$
$_{92}^{234} U$	2.45 $\times$ 10 ⁵ y	$(α)$	$_{97}^{243} Bk$	4.5 h	$(α or E . C .)$
$_{92}^{235} U$	7.03 $\times$ 10 ⁸ y	$(α)$	$_{99}^{253} Es$	20.47 d	$(α)$
$_{92}^{238} U$	4.47 $\times$ 10 ⁹ y	$(α)$	$_{100}^{254} Fm$	3.24 h	$(α or S . F .)$
$_{92}^{239} U$	23.54 m	$(β^{−})$	$_{100}^{255} Fm$	20.1 h	$(α)$
$_{93}^{239} Np$	2.3 d	$(β^{−})$	$_{101}^{256} Md$	76 m	$(α or E . C .)$
$_{94}^{239} Pu$	2.407 $\times$ 10 ⁴ y	$(α)$	$_{102}^{254} No$	55 s	$(α)$
$_{94}^{239} Pu$	6.54 $\times$ 10 ³ y	$(α)$	$_{103}^{257} Lr$	0.65 s	$(α)$
$_{94}^{241} Pu$	14.4 y	$(α or β^{−})$	$_{105}^{260} Ha$	1.5 s	$(α or S . F .)$
$_{95}^{241} Am$	432.2 y	$(α)$	$_{106}^{263} Sg$	0.8 s	$(α or S . F .)$

Questions & Answers

what's Thermochemistry

rhoda Reply

the study of the heat energy which is associated with chemical reactions

Kaddija

How was CH4 and o2 was able to produce (Co2)and (H2o

Edafe Reply

explain please

Victory

First twenty elements with their valences

Martine Reply

what is chemistry

asue Reply

what is atom

asue

what is the best way to define periodic table for jamb

Damilola Reply

what is the change of matter from one state to another

Elijah Reply

what is isolation of organic compounds

IKyernum Reply

what is atomic radius

ThankGod Reply

Read Chapter 6, section 5

Kareem

Atomic radius is the radius of the atom and is also called the orbital radius

Kareem

atomic radius is the distance between the nucleus of an atom and its valence shell

Amos

Read Chapter 6, section 5

paulino

Bohr's model of the theory atom

Ayom Reply

is there a question?

when a gas is compressed why it becomes hot?

ATOMIC

It has no oxygen then

Goldyei

read the chapter on thermochemistry...the sections on "PV" work and the First Law of Thermodynamics should help..

Which element react with water

Mukthar Reply

Mgo

Ibeh

an increase in the pressure of a gas results in the decrease of its

Valentina Reply

definition of the periodic table

Cosmos Reply

What is the lkenes

Da Reply

what were atoms composed of?

Moses Reply

what is chemistry

Imoh Reply

what is chemistry

Damilola

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Source: OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9

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