MCQs World Official 🩺
June 13, 2025 at 10:13 AM
*Q. The line spectra of two elements are not identical because*
👍🏻 A. the elements do not have the same number of neutrons.
❤️ B. they have different mass numbers.
😂 C. their outermost electrons are at different energy levels.
😮 D. they have different valencies.
*👉🏻 Answer With Emoji ✅*
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