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Chemistry, 27.09.2019 07:30 chaserandall2004
How many neutrons does element x have if its atomic number is 23 and its mass number is 90?
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He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98
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How many neutrons does element x have if its atomic number is 23 and its mass number is 90?...
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