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jee_main_2025_07_april_evening - Coordination Compounds Topics

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QUESTION #35 Valency and Oxidation State
'X' is the number of acidic oxides among textVO_2, textV_2textO_3, textCrO_3, textV_2textO_5 and textMn_2textO_7. [cite: 307, 316] The primary valency of cobalt in [textCo(textH_2textNCH_2textCH_2textNH_2)_3]_2(textSO_4)_3 is Y. The value of textX + textY is:
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QUESTION #37 Werner's Theory
Match List-I with List-II
List-I (Complex) List-II (Primary valency and Secondary valency) (A) [textCo(en)_2textCl_2]textCl(I) 3      6 (B) [textPt(NH_3)_2textCl(NO_2)](II) 3      4 (C) textHg[textCo(SCN)_4](III) 2      6 (D) [textMg(EDTA)]^2-(IV) 2      4 Choose the correct answer from the options given below:
QUESTION #40 Magnetic Properties and Crystal Field Theory
The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively: [textFe(CN)6]^3-, [textFeF6]^3-, [textCoF6]^3-, [textMn(CN)6]^3-
QUESTION #49 Magnetic Properties and Crystal Field Theory
The number of paramagnetic metal complex species among [textCo(textNH_3)_6]^3+, [textCo(textC_2textO_4)_3]^3-, [textMnCl_6]^3-, [textMn(textCN)_6]^3-, [textCoF_6]^3-, [textFe(textCN)_6]^3- and [textFeF_6]^3- with same number of unpaired electrons is dots.
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