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Answered

Round off the mass number of oxygen​

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Castillomikaela777go

Answer:

The mass number can be found by rounding the average atomic mass to the nearest whole number. For example, the average atomic mass of lithium is 6.941 amu. The mass number of lithium is 7 (6.941 rounds to 7).

Jennycabiles25go

THE MASS NUMBER OF OXYGEN IS 15.999 u

ROUND OFF IS 16 u

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