question 1 of 10\nco₂\nhow many elements are in the chemical formula co₂?\n4\n2\n3\n1

question 1 of 10\nco₂\nhow many elements are in the chemical formula co₂?\n4\n2\n3\n1
Answer
Explanation:
Step1: Identify elements in formula
In $CO_2$, 'C' represents carbon and 'O' represents oxygen.
Answer:
2