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Find a number n from another fact, then pick the ions with n unpaired electrons

This type of question, asked 2 times: 28 Jan 2025, 4 Apr 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    28 Jan 2025

    31
    Consider ' nn ' is the number of lone pair of electrons present in the equatorial position of the most stable structure of ClF3ClF_{3}. The ions from the following with ' nn ' number of unpaired electrons are : (A) V3+V^{3 +} (B) Ti3+Ti^{3 +} (C) Cu2+Cu^{2 +} (D) Ni2+Ni^{2 +} (E) Ti2+Ti^{2 +} Choose the correct answer from the options given below :

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  2. Question 2

    4 Apr 2026 S2

    37
    Consider ∣x∣|x| is the difference in oxidation states of Mn in highest manganese fluoride and highest manganese oxide. The ions with ∣x∣|x| number of unpaired electrons from the following are: (A) Sc3+{Sc}^{3 +} (B) Zn2+{Zn}^{2 +} (C) V2+V^{2 +} (D) Fe2+{Fe}^{2 +} (E) Co2+{Co}^{2 +} Choose the correct answer from the options given below:

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