A) 48 B) 41 C) 53 D) 24
A) 5 B) 3 C) 2 D) 4
A) Argon and cerium B) Tin and lead C) Platinum and silver D) Uranium and beryllium
A) 13 B) 35 C) 39 D) 24
A) 5 B) 6 C) 4 D) 3
A) 235U B) 232Th C) 239Pu D) 238U
A) Low atomic weight B) High abundance in nature C) Lack of primordial radionuclides D) Energy from neutron-pairing effects
A) 151Eu and 209Bi B) 235U and 187Re C) 115In and 87Rb D) 195Pt and 9Be
A) 53 B) 30 C) 48 D) 39
A) Iridium and thallium B) Technetium and promethium C) Chlorine and potassium D) Silver and antimony
A) 48 B) 30 C) 39 D) 41
A) 39 B) 9 C) 30 D) 48
A) 13 B) 9 C) 5 D) 30
A) Technetium B) Promethium C) Beryllium D) Gallium
A) 4 B) 3 C) 5 D) 6
A) Greater than 1010 years B) Greater than 1018 years C) Less than 106 years D) Exactly 109 years
A) Primordial isotopes B) Stable isotopes C) Radioisotopes D) Synthetic isotopes
A) 12C B) 11C C) 15C D) 14C
A) About 286 B) About 339 C) About 987 D) About 100
A) A nuclide that has existed since the Solar System's formation B) A nuclide created only in a laboratory C) A nuclide with a half-life of less than one hour D) A nuclide that only contains protons
A) The nuclide is made of protons only B) The nuclide has a very short half-life C) No decay products have yet been observed D) The nuclide decays every hour
A) Kazimierz Fajans B) Frederick Soddy C) Margaret Todd D) T. W. Richards
A) Heavy mass B) Different atoms C) At the same place D) Radioactive decay
A) T. W. Richards B) Margaret Todd C) The Nobel Committee D) Kazimierz Fajans
A) The element moves two places to the left B) The element moves two places to the right C) The element moves one place to the right D) The element stays in the same place
A) 339 B) 987 C) 35 D) 251
A) The invention of the mass spectrometer B) The creation of synthetic elements C) The discovery of the periodic table D) His work on isotopes
A) Uranium B) Thorium X C) Mesothorium D) Lead
A) The element moves two places to the left B) The element moves one place to the left C) The element moves one place to the right D) The element moves two places to the right
A) A nuclear isomer B) A radioactive decay C) A stable element D) A standard isotope
A) Mass number B) Metastable state C) Element symbol D) Atomic number
A) A non-existent isotope state B) Lowest-energy ground state C) A radioactive decay state D) Energetically excited nuclear state
A) State only the atomic number as a subscript B) Omit all numbers C) State only the mass number as a superscript D) Write out the full element name
A) Uranium-92 B) Helium-2 C) Oxygen-8 D) Carbon-12
A) Seventy-three-tantalum-one-eighty B) One-eighty-m-seventy-three-tantalum C) Tantalum-180m D) Tantalum-seventy-three
A) AZE notation is grammatically incorrect B) Spoken English lacks mathematical symbols C) Original spoken usage predates AZE notation D) Pronunciation changes by region
A) Uranium two-thirty-five B) Uranium-two-hundred-thirty-five C) Two-thirty-five uranium D) Uranium-two-three-five
A) German B) French C) Greek D) Latin
A) Chemical properties B) Physical properties C) Atomic mass D) Nuclear stability
A) 6 B) 12 C) 8 D) 7
A) Hydrogen B) Oxygen C) Nitrogen D) Carbon
A) Isotopes B) Isobars C) Elements D) Isomers
A) Nucleons B) Protons and neutrons C) Neutrons D) Electrons
A) Equal B) Place C) Different D) Atom
A) 8 B) 7 C) 14 D) 6
A) John Dalton B) F. W. Aston C) J. J. Thomson D) Dmitri Mendeleev
A) 1905/1906 B) 1919/1920 C) 1922/1923 D) 1912/1913
A) Positive ions B) Gamma radiation C) Negative electrons D) Neutron beams
A) Atomic spectroscopy B) Thomson's parabola method C) Mass spectrometry D) Isotopic separation
A) 19 July 1913 B) 27 January 1913 C) 12 December 1912 D) 17 January 1913
A) Argon B) Helium C) Chlorine D) Neon
A) It was always much fainter B) They were identical C) It was always much brighter D) It fluctuated randomly
A) Mendeleev B) Rutherford C) J. J. Thomson D) F. W. Aston
A) 1913 B) 1919 C) 1920 D) 1925
A) 35.45 B) 36.00 C) 34.50 D) 35.00
A) Niels Bohr B) James Chadwick C) Ernest Rutherford D) Albert Einstein
A) Kinetic isotope effect B) Equilibrium isotope effect C) Vibrational absorption effect D) Electronic shell effect
A) Isobars B) Isomers C) Isotopologues D) Allotropes
A) Residual strong force B) Weak nuclear force C) Electromagnetic force D) Gravitational force
A) They have too much mass B) They contain too many neutrons C) They are negatively charged D) They are positively charged
A) By adding positive charge B) By absorbing electromagnetic radiation C) By pushing protons slightly apart D) By removing protons
A) Uranium-238 B) Helium-3 C) Tin D) Calcium-40
A) Uranium B) Helium C) Tin D) Calcium
A) 5 B) 10 C) 80 D) 26
A) 16 B) 26 C) 5 D) 11
A) 10 B) 80 C) 26 D) 19
A) Odd-proton-even-neutron. B) Even-proton-even-neutron. C) Odd-proton-odd-neutron. D) Even-proton-odd-neutron.
A) 58%. B) 90%. C) 25%. D) 10%.
A) Because of pairing. B) Because of the CNO cycle. C) Because of their mass number. D) Because of beta decay.
A) All 41. B) Only 10. C) None of them. D) Exactly 5.
A) Nitrogen-14. B) Helium-4. C) Lithium-6. D) Beryllium-8.
A) 147N. B) 180m73Ta. C) 21H. D) 105B.
A) Their high spin values. B) The oddness of their nucleon numbers. C) Their location in the periodic table. D) Their exclusion from the CNO cycle.
A) Electron capture. B) Spontaneous fission. C) Triple alpha process. D) Positron emission.
A) Non-radioactive B) Stable C) Fissile D) Inert
A) Zero spin B) Radioactive decay C) Nonzero integer spin D) Increased mass
A) Plutonium-244 B) Uranium-238 C) Carbon-14 D) Potassium-40
A) Big Bang B) Nuclear reactors C) Supernovae D) Stars
A) Carbon-14 B) Platinum-195 C) Tritium D) Uranium-238
A) Synthetic B) Radiogenic C) Cosmogenic D) Nucleogenic
A) Ocean sediment B) Meteorites C) Stars D) Supernovae
A) Aluminium-26 B) Potassium-40 C) Carbon-14 D) Uranium-238
A) Neutrons B) Protons C) Cosmic rays D) Electrons
A) 100 B) 26 C) 80 D) 94
A) Newton B) Liter C) Kilogram D) Dalton
A) Biological filtration B) Gas diffusion C) Magnetic resonance D) Thermal expansion
A) Crystallization B) Sublimation C) Girdler sulfide process D) Gas centrifugation
A) A dimensionless quantity B) Measured in Daltons C) Measured in kilograms D) An energy value
A) Vitamin content B) Adulteration C) Protein density D) Microbial contamination
A) Isoscapes B) Isotopic charts C) Isotope plots D) Isotope maps
A) Saturn B) Mars C) Venus D) Jupiter
A) Kinetic substitution B) Isotopic labeling C) Isotope analysis D) Isotope dilution
A) Radioactive decay rate B) Chemical activity C) Relative abundances D) Total mass
A) Uranium-lead dating B) Rubidium-strontium dating C) Radiocarbon dating D) Potassium-argon dating
A) 12C B) 13C C) 40K D) 16O
A) 57Fe B) 1H C) 31P D) 15N
A) Medical diagnosis B) Weapon manufacturing C) Structural engineering D) Fuel enrichment
A) Material dating B) Medical treatment C) Power generation D) Chemical analysis
A) 57Fe B) 31P C) 60Co D) 235U |