Question #ffc2c Chemistry Chemical Reactions Review of Elements and Compounds 1 Answer Simon Moore Apr 25, 2017 Element. Explanation: Ozone is #O_3#, so it is an allotrope of oxygen (which predominantly exists as #O_2#). However, whether existing in the form of molecular oxygen (#O_2#) or ozone (#O_3#), it is still an element, as it contains only one type of atom. Answer link Related questions Question #f13ae Question #bb7b1 Question #78896 Question #fd74b Question #f13b2 How do I find the molar mass of an element? What is an element? What are some common mistakes students make with elements? What are some examples of compounds? How are compounds formed? See all questions in Review of Elements and Compounds Impact of this question 2371 views around the world You can reuse this answer Creative Commons License