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How many neutrons does element X have if its atomic number is 43 and its mass number is 164?

How many neutrons does element X have if its atomic number is 43 and its mass number is 164?
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How many neutrons does element X have if its atomic number is 43 and its mass number is 164?

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User Caitlin Morris
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1 Answer

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164-43=121
Element x has 121 neutrons
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User Chenglou
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