Explain barium, ba, is used in x-ray applications

Reference no: EM13555659

Barium, Ba, is used in X-Ray applications. The barium nucleus has a charge of +56. A barium atom has lost two outer electrons and has become a positively charged ion. How many electrons does this ion have?

1. 54 electrons

2. 55 electrons

3. 56 electrons

4. 58 electrons

5. 2 electrons

Reference no: EM13555659

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