SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The number of electrons for an ion A2-, is 18. Calculate the number of proton in the ion.
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16
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18
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20
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22
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Explanation:
Detailed explanation-1: -Sulphur has proton number of 16 and 18 electrons. Atomic symbol of Sulfur ion is. ( S 2-16 34 ) .
Detailed explanation-2: -Answer and Explanation: There are 17 protons in an ion with 18 electrons and a-1 charge.
Detailed explanation-3: -So, the ion contains two excess electrons as compared to the number of protons. Hence, the number of electrons in the ion = (16+2) = 18. Correct answer: (b) 18.
Detailed explanation-4: -Answer and Explanation: The atomic number of sulfur is 16. The ion has 18 electrons that mean sulfur carries the charge of-2.
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