Below is a representation of a sample of gas with molecules having the formula XO2. Which element could NOT be represented by X? 
Definitions:
Insulin Injections
A method used to administer insulin directly into the body to manage blood sugar levels in individuals with diabetes.
Teaching Manikin
A lifelike model used in education, especially in medical and emergency training, to simulate real-life scenarios.
Participating Approach
A strategy or methodology that actively involves stakeholders, such as community members or employees, in the decision-making process.
Grieving Patients
Individuals experiencing emotional, physical, and psychological responses to loss, particularly in the context of healthcare.
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