science
Grade-9
Easy
Question
Which of the following statements is incorrect?
- Isotopes which are of the same elements are radioactive.
- Isotopes are the atoms of same elements
- Isobars are having the same mass numbers
- Isotopes have same properties
Hint:
The isotopes are different atoms that have the same number of protons. The statement that says the isotopes are atoms of the same element is incorrect.
The correct answer is: Isotopes are the atoms of same elements
- The isotopes are elements that have the same atomic and different numbers of neutrons.
- The physical behavior and atomic masses will be different in isotope elements.
- Many elements that are isotopes will be unstable and exist in a radioactive form.
- All the isotopes are not atoms of the same element.
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