- 19,9924 AMU is the mass of one of the three isotopes of neon equalling 90.4838%. The other two isotopes have a ma...

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Answer 1

Answer #1

Average atomic mass of Ne Neon = 9924 X 90.4838) 100 ( 20.9940 X 0.2696) + 1 21.9914 X 9.2465 100 ame 100 ) 20.1799 anu 20.18

Answer 2

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