How many isotopes have odd atomic number?

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How many isotopes have odd atomic number? Answer: 59

There is no single number of isotopes with an odd atomic number because the total number of known isotopes is not fixed. However, it is known that there are 59 elements with odd atomic numbers, and they can have varying numbers of isotopes, from one to many.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.