Below is a representation of a sample of gas with molecules having the formula XO2. Which element could NOT be represented by X? 
Definitions:
Postmodern City
A term describing urban areas that reflect the economic, social, and aesthetic qualities of postmodernism, including diversity, technological innovation, and a mix of historical and contemporary architectural styles.
Pelvic Inflammatory Disease (PID)
An infection of the female reproductive organs, often caused by sexually transmitted bacteria.
Ectopic Pregnancy
A pregnancy where the fertilized egg implants outside the uterus, often in a fallopian tube, posing serious risks.
Fallopian Tubes
Tubes through which eggs travel from the ovaries to the uterus in the female reproductive system.
Q5: What is the molecular formula for CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>CH(OH)CH<sub>2</sub>CH<sub>3</sub>?<br>A)
Q9: Most metals come from _, which are
Q12: What is formed when molecular hydrogen combines
Q18: When examining axillary lymph nodes from patients
Q20: Indicate whether the following statement are true
Q23: Steven Smith is a 35-year-old man who
Q24: Indicate whether the following statement are true
Q87: Which is a covalent oxide?<br>A) CaO<br>B) Na<sub>2</sub>O<br>C)
Q98: Which of these pairs consists of isoelectronic
Q114: What gas is produced at the anode