Which of the following is the incorrect match for atom of element ? — Periodic Table and Periodicity Chemistry Question
Question
Which of the following is the incorrect match for atom of element ?
Answer: D
💡 Solution & Explanation
(a) [Ar]3d5 4s1 -> Cr(24) -> 4th period, 6th group (b) [Kr]4d10 -> Pd(46) -> 5th period, 12th group (c) [Rn]6d2 7s2 -> Th(90) -> 7th period, 3rd group (d) [Xe]4f14 5d2 6s2 -> Hf(72) -> 6th period, 4th group
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