Which of the following statement is not true for the dipositive zinc ions having mass number 70? Chemistry - Questions and Answers

Which of the following statement is not true for the dipositive zinc ions having mass number 70?

(a)It contains 40 neutrons

(b)It contains 28 electrons

(c)It contains 30 protons

(d)It isotopic number is same as that of ₂₄Cr⁵⁵ Right sign

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