Radiolysis of water within the cell can produce which ion pair?

Study for the Mosby Radiography Test. Utilize flashcards and multiple choice questions with hints and explanations. Prepare for your exam with confidence!

Multiple Choice

Radiolysis of water within the cell can produce which ion pair?

Explanation:
Radiolysis of water by ionizing radiation begins with ionization: a water molecule loses an electron, leaving a positively charged water molecule (H2O+) and a free electron. This separation of charge creates the ion pair: a positively charged water molecule and a free electron. The other options misstate the charges or miss the primary ionization event (there isn’t a negatively charged water molecule with a free proton, nor a free neutron paired with a negatively charged proton in this context; while radicals form later, the first products are H2O+ and e−).

Radiolysis of water by ionizing radiation begins with ionization: a water molecule loses an electron, leaving a positively charged water molecule (H2O+) and a free electron. This separation of charge creates the ion pair: a positively charged water molecule and a free electron. The other options misstate the charges or miss the primary ionization event (there isn’t a negatively charged water molecule with a free proton, nor a free neutron paired with a negatively charged proton in this context; while radicals form later, the first products are H2O+ and e−).

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