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An ion has 56 protons, 54 electrons, and 81 neutrons. What is the
element's symbol?

2 Answers

3 votes
The barium has 56 protons, 54 electrons and 81 neutrons!
User Akirast
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12 votes

Step-by-step explanation:

The barium – 137 cation would have 56 protons, 54 electrons and 81 neutrons.

User Ibrahim Disouki
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