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At which temperature do atoms stop vibrating?

Atomic number 27 represents which element?

Atomic number is represented by which letter?

Atoms of which element have the most valence electrons?

Between which atoms do hydrogen bonds form in water?

Electric current originates from which part of an atom?

For a hydrogen atom, which electron transition results in the emission of a photon with the longest wavelength?

Which of the following contains the most atoms?

Which of the following atoms is diamagnetic in its ground-state?

Which of the following contains the fewest atoms?

Element with atomic number 56 belongs to which block?

Which of the following describes the Bohr atomic model?

Which of the following elements has the greatest atomic radius?

Which part of a helium atom is positively charged?

Which of the following is not made up of atoms?

Which electrons are the valence electrons of the atom?

Which atoms have the lowest electronegativity?

Which symbols represent atoms that are isotopes of each other?

Which statement concerning the structure of the atom is correct?

Which statement best describes the density of an atom’s nucleus?