ans this fast.........
chapter.....structure of atom
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ans this fast.........
chapter.....structure of atom
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The answer is 3rd option
Verified answer
Answer:
i. & iv. are isobars.
ii. & iii. are isotopes
Explanation:
isotopes are those elements who have same elements but different masses in nature
isobars are those elements who have same mass but elements or their properties are different.