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Periodic Table and Periodicity · 2025 · 29 Jan · Shift 1

2 Chemistry questions from this JEE Main paper
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Periodic Table and Periodicity · 2025 · 29 Jan · Shift 1

2 Chemistry questions from this JEE Main paper

  1. Q19.An element ‘E’ has the ionisation enthalpy value of 374 kJ mol⁻¹. ‘E’ reacts with elements A, B, C and D with electron gain enthalpy values of −328, −349, −325 and −295 kJ mol⁻¹, respectively. The correct order of the products EA, EB, EC…
    Chemistry · Periodic Table and Periodicity · MCQ
  2. Q20.Given below are two statements : Statement (I) : The radii of isoelectronic species increases in the order. Mg2+ < Na+ < F − < O2− Statement (II) : The magnitude of electron gain enthalpy of halogen decreases in the…
    Chemistry · Periodic Table and Periodicity · MCQ