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Q.

The chloride ion contains _____________ protons.

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a

17

b

34

c

24

d

18

answer is A.

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Detailed Solution

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Chlorine has an atomic mass of 35.45 and an atomic number of 17, implying that an atom of chlorine contains 17 protons, 17 electrons, and 18 neutrons. The chloride ion i.e. Cl- has one extra electron as an ion but the number of protons will remain the same as 17.

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