Question

12C6 and 14C6 are two elements. Do both these elements, get different
positions in modern periodic table? Explain your answer. Identify the
period and group to which they belong in the modern periodic table and
explain your answer.
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Answer 1

Answer:

No, they do not get different positions in the modern periodic table. This is because the elements are placed according to the atomic number in modern periodic table and these are isotopes (elements which have same atomic number but different mass number).