Chemistry, asked by Sahifa3884, 1 year ago

An element with mass number 81 contains 31.7% more neutrons as compare to protons find out atomic symbol of element.

Answers

Answered by rishika457
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the atomic number of element is 35 so it's bromine and symbol is br

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Answered by Anonymous
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Answer:

Explanation:

the atomic number of element is 35 so it's bromine and symbol is br

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