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