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Classification of Elements and Periodicity in Properties

  • Periodic Trends in Properties of Elements
  • Electronic Configuration and Types of Elements
  • Periodic Trend in Electronegativity
  • Anomalies in Ionization Enthalpy Trend (Period 2)
  • Ionic Radii of Isoelectronic Species
  • Nomenclature of Elements with Z > 100
  • Isoelectronic Species
  • Nomenclature of Elements with Atomic Number Greater than 100
  • Periodic Trends – Chemical Reactivity and Nature of Oxides
  • Periodic Trends – Ionisation Enthalpy
  • Atomic/ionic radii trends and IUPAC nomenclature of elements
  • Periodic trend of metallic character
  • Periodic trend - atomic radius
  • Periodic properties - paramagnetism, ionisation enthalpy, oxidising power, reactivity
  • Periodic table - blocks and representative elements
  • Classification of elements
  • Ionisation enthalpy trends
  • Nature of oxides
  • Electron gain enthalpy
  • Valency and formula of ionic compounds
  • Electronic configuration and position of elements
All Exams › NEET Previous Year Questions › Chemistry › Classification of Elements and Periodicity in Properties › Valency and formula of ionic compounds

Valency and formula of ionic compounds

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2018 1 question

  1. Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is $1s^2 2s^2 2p^3$, the simplest formula for this compound is
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