Question

A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar System. Mass-spectroscopic analysis produced the following data on the isotopes of ruthenium in these samples: relative mass isotope (amu) abundance 101 Ru 49.% 100.91 104Ru 51.% 103.9 Use these measurements to complete the entry for ruthenium in the Periodic Table that would be used on 98765 ALEKS. Be sure your answers have h correct number of significant digits Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for ruthenium in the Periodic Table we us o Earth. ? Ru

Answer 1

Dear Student,

For the given question simply multiply the mass with relative abundance out of 100%and add then we can get the mass number ans Ru means Ruthenium and atomic number is 42. we will get the mass number from the solution.We can write the answer.

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Giren Isotope mass camo) Relative abundance O Ro 10.91 49.'. 104 103.91 If we multiply mass byrelative abundance by mass and then add we will get the mass number. aixos! 009 e lop, aixo.49 A 103. al Xos! = 102,44 Rounding off = 102 & Answer is 102 Ru ५५