Question

Given that the percentage abundance of the isotope Ne2010 is 90% and that of the isotope Ne2210 is 10%, calculate the average atomic mass of neon.

Answer 1

Dear Student,

◆ Answer -

Average atomic mass = 20.2 amu

● Explanation -

Average atomic mass of Neon is calculated by -

Average atomic mass = 90/100 × 20 + 10/100 × 22

Average atomic mass = 18 + 2.2

Average atomic mass = 20.2 amu

Hence, the average atomic mass of Neon is 20.2 amu.

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Answer 2

Explanation:

Isotopes of Neon are `""_10^20"Ne"   "and"   ""_10^22"Ne"`  with 90% and 10% abundance, respectively.

 Average atomic mass of Neon = `20 xx[90/100] + 22[10/100]`

                                                  =  `1800/100 + 220/100`

                                                  =   18.00  +2.2

                                                  =    20.2 u