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22.04.2021 •
Chemistry
Question 3 (5 points)
(02.01 MC)
Which of the following observations indicates that an atom has neutrons? (5 points)
Some uncharged particles are scattered by a beryllium atom when it hits a gold foil.
Some uncharged particles bounce back from a gold foil when it is bombarded with alpha particles.
A radiation with neutral particles is emitted when alpha particles strike beryllium atoms.
A radiation which attracts electrons is produced when a beryllium atom is bombarded with alpha particles.
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