are all the elements that mentioned in the periodic table made up of t

1.	are all the elements that mentioned in the periodic table made up of their isotopes????what i mean to say is that are these elements the mixture of their isotopes??
Answer» ANSWER: no not all ELEMENTS have ISOTOPES follow mark as BRAINLIEST I NEED it

are all the elements that mentioned in the periodic table made up of their isotopes????what i mean to say is that are these elements the mixture of their isotopes??

Answer»