A mole of an element contains the same number of atoms as a mole of any other element.
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Q12: When a particular solid sample is examined
Q13: The pie chart shown below represents the
Q14: The elements sodium, potassium, and oxygen are
Q15: Elements in the same period of the
Q16: An element is a shiny gray solid
Q18: Sodium is a highly reactive metal and
Q19: The electron arrangement for Na would be:
shell
Q20: Electron shells define a region in space
Q21: What is the mass number of an
Q22: The number of valence electrons of a
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