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Einsteinium (Es) has no stable isotopes. A standard Atomic Mass cannot be given.
[edit] Tablenuclidesymbol Z(p) N(n)
isotopic mass (u)
half-life nuclear
spin representative
isotopic
composition
(mole fraction) range of natural
variation
(mole fraction) excitation energy 240Es 99 141 240.06892(43)# 1# s
241Es 99 142 241.06854(24)# 10(5) s [8(+6-5) s] (3/2-)
242Es 99 143 242.06975(35)# 13.5(25) s
243Es 99 144 243.06955(25)# 21(2) s 3/2-#
244Es 99 145 244.07088(20)# 37(4) s
245Es 99 146 245.07132(22)# 1.1(1) min (3/2-)
246Es 99 147 246.07290(24)# 7.7(5) min 4-#
247Es 99 148 247.07366(3)# 4.55(26) min 7/2+#
248Es 99 149 248.07547(6)# 27(5) min 2-#,0+#
249Es 99 150 249.07641(3)# 102.2(6) min 7/2+
250Es 99 151 250.07861(11)# 8.6(1) h (6+)
250mEs 200(150)# keV 2.22(5) h 1(-)
251Es 99 152 251.079992(7) 33(1) h (3/2-)
252Es 99 153 252.08298(5) 471.7(19) d (5-)
253Es 99 154 253.0848247(28) 20.47(3) d 7/2+
254Es 99 155 254.088022(5) 275.7(5) d (7+)
254mEs 84.2(25) keV 39.3(2) h 2+
255Es 99 156 255.090273(12) 39.8(12) d (7/2+)
256Es 99 157 256.09360(11)# 25.4(24) min (1+,0-)
256mEs 0(100)# keV 7.6 h (8+)
257Es 99 158 257.09598(44)# 7.7(2) d 7/2+#
258Es 99 159 258.09952(32)# 3# min
[edit] Notes
- Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
- Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.
What else can I help you with?
What does the element Europium bond with?
Europium is a lanthanide. It forms oxides halides a sulfide and other compounds. It forms salts such as europium(III) sulfate. It is quite reactive and needs to be stored without contact with air as it readily oxidises.
Why uranium is most common in isotopes?
The most common isotope of uranium is uranium-238.
What are the three most common isotopes in polonium?
208Po, 209Po, 210Po
Does Butane have isotopes?
Yes, butane does have isotopes. The most common isotopes of butane are carbon-12 and carbon-13. Isotopes of butane can have varying masses due to differences in the number of neutrons in the nucleus.
Does europium occur naturally or is it synthetic?
Europium does occur naturally in low concentrations, but it is mainly produced synthetically due to its scarcity in the Earth's crust. It is commonly used in a variety of applications, such as in phosphors for electronic displays and fluorescent lamps.
Is europium radioactive?
Europium is radioactive, though for most practical purposes it can be treated as stable. 52.2% of europium is stable. 47.8%, is radioactive 151Eu, but the half life of this is long, at 5,000,000,000,000,000,000 years. Like all other elements, europium has radioactive synthetic isotopes.
How many neutrons are in europium?
europium's atomic number is 63, it's mass (in amu's [atomic mass units]) is 152, rounded. the atomic number = the number of protons, so europium has 63 protons. the number of protons = the number of electrons, so there are 63 electrons in a europium atom. the mass= protons + neutrons, therefore neutrons = mass - protons. this would be 152 - 63 = 89 there are 89 neutrons in a europium atom. p+: 63 n: 89 e-: 63 hope i helped! ^.^
How many protons electrons and neutrons are in europium?
In europium, the number of protons is 63, electrons is also 63, and neutrons can vary based on the isotope of europium. The most common isotope, europium-153, has 90 neutrons.
What is the mass number of europium?
Mass number is the number of protons and neutrons in the nucleus of an atom. And we might consider that the mass number of europium is 153 and call it good. Europium has an atomic number of 63, and there is only one stable isotope of it - europium-153. This isotope has the 63 protons and 90 neutrons. But there are other isotopes of europium, and their mass numbers range from 130 through 167 because europium has isotopes with neutron counts from 47 through 104. Use the link below for more information.
What are the most common isotopes of the element californium?
The isotopes 252Cf and 251Cf.
What does the element Europium bond with?
Europium is a lanthanide. It forms oxides halides a sulfide and other compounds. It forms salts such as europium(III) sulfate. It is quite reactive and needs to be stored without contact with air as it readily oxidises.
Why uranium is most common in isotopes?
The most common isotope of uranium is uranium-238.
What are the most common isotopes of germanium?
69 and 67
What are the three most common isotopes in polonium?
208Po, 209Po, 210Po
Does Butane have isotopes?
Yes, butane does have isotopes. The most common isotopes of butane are carbon-12 and carbon-13. Isotopes of butane can have varying masses due to differences in the number of neutrons in the nucleus.
How is the atomic mass for chlorine related to isotopes for that atom?
The average atomic mass is weighted by the most common isotopes and their relative abundance.
Does europium occur naturally or is it synthetic?
Europium does occur naturally in low concentrations, but it is mainly produced synthetically due to its scarcity in the Earth's crust. It is commonly used in a variety of applications, such as in phosphors for electronic displays and fluorescent lamps.
