GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the approximate atomic mass of an atom with 16 neutrons, 15 protons, and 15 electrons?
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15 daltons
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16 daltons
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30 daltons
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31 daltons
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46 daltons
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Explanation:
Detailed explanation-1: -Answer and Explanation: The approximate atomic mass of an atom with 16 neutrons, 15 protons, and 15 electrons would be 31.
Detailed explanation-2: -Complete answer: The number of neutrons of radio phosphorus is given as 16 + 1 = 17. So, the atomic number which is equal to the number of protons = 15. Mass number = 15 + 17= 32. Thus, the atomic number and mass number for the radio phosphorus will be 15, 32 respectively.
Detailed explanation-3: -A nucleus of stable phosphorus has 15 protons and 16 neutrons.
Detailed explanation-4: -Answer and Explanation: The atomic number (Z) of phosphorus is 15 . Therefore, the isotopic symbol of phosphorus with 16 neutrons is 3115P 15 31 P .
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