Chemistry · Oct / Nov 2016 · Paper 12 · Question 6
5070Atomic structure and the Periodic Table
Which statement about chlorine atoms and chloride ions is correct?
- AThey are both isotopes of chlorine.
- BThey undergo the same chemical reactions.
- CThey have the same number of protons.
- DThey have the same physical properties.
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Correct answer: C. They have the same number of protons.
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