Atom X contains nine protons and seven neutrons. Atom Z contains nine protons and eight neutrons. Which of the following statements correctly describes the two atoms? (AKS 1a/DOK 1)
A.
They have the same mass number
B.
They are radioactive
C.
They are isotopes
D.
They are atoms of different elements
Answers: 1
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Atom X contains nine protons and seven neutrons. Atom Z contains nine protons and eight neutrons. Wh...
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