A sample of oxygen contains $O^{16}$ and $O^{18}$ isotopes only with percentage abundance respectively as $90 %$ and $10 %$ . Identify the correct option(s):

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Average number of protons per atom is 8

Average atomic mass of sample is 16.2.

Molecular mass of oxygen gas which can be formed from the sample can vary from $32$ to $36$

Average number of neutrons per atom is $8.2$

answer is A, B, C, D.

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Detailed Solution

(a) $\frac{90 \times 16 + 10 \times 18}{100} = 16.2$

(b) $0.9 \times 8 + 0.1 \times 8$

(d) Molecular mass of oxygen gas which can be formed from the sample can vary from $32$ to $36$

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