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Given that the abundacne of isotopes .^(...

Given that the abundacne of isotopes `.^(54)Fe`, `.^(56)Fe`, and `.^(57)Fe` is 5%, 90% and 5% respectively. The atomic mass of `Fe` is

A

(a)`55.85`

B

(b)`55.95`

C

(c )`55.75`

D

(d)`55.05`

Text Solution

Verified by Experts

The correct Answer is:
B
The atomic mass of iron is
`=((5xx54)+(90xx56)+(5xx57))/100=55.95`
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