Question

The abundance of three isotopes of oxygen are as follows % of O16 = 90% , % of O17 + % of O18 = 10% Assume at. mass same as mass no. Find out % of O17 and O18, if the isotopic mass is 16.12.

(A)6&4 (B) 5&5 (C)8&2

(D)7&3

If i could get d ans real quick......

Answer 1

Answer:

Naturally occurring oxygen is composed of three stable isotopes, 16O, 17O, and 18O, with 16O being the most abundant (99.762% natural abundance). Depending on the terrestrial source, the standard atomic weight varies within the range of [15.99903, 15.99977] (the conventional value is 15.999)