GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Uranium-235 has 92 protons. How may neutrons do it have?
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143
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92
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235
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90
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Explanation:
Detailed explanation-1: -92U235 has 92 protons, 92 electrons and 235-92 = 143 neutrons.
Detailed explanation-2: -Solution. The atomic number of uranium (see periodic table) is 92, and the mass number of the isotope is given as 238. Therefore, it has 92 protons, 92 electrons, and 238-92 : 146 neutrons.
Detailed explanation-3: -of electrons in the 92 U 235 nucleus is : 143.
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