Answer:False
Explanation:co2 or carbon dioxide is a compound not an element, you can even check this on the periodic table
Vertical columns are called groups, or families.
They share similar chemical properties.
Answer: <span>have similar chemical properties</span>
X is girl, and y is boy, they are formed by fission.
C6H9MnO6.2(H2O)
Here is the formula hope it helps.
