Classification of Elements and Periodicity in Properties questions

826 published questions with worked solutions.

• **Assertion:** The ionisation energy of gallium remains nearly the same as that of aluminium. **Reason:** This is due to the...
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• **Assertion:** OF_2 is named as oxygen difluoride. **Reason:** OF_2 is so named because oxygen is less electronegative than...
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Which one is most electronegative?
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• **Assertion:** Helium and beryllium have similar outer electronic configurations of the type ns^2. **Reason:** Helium and...
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Which element is most metallic?
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The correct order of acidic nature (of common period-2/period-3 oxides) is:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Phosphide ion has the electronic structure similar to that of:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Which of the following is a metalloid?
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Which set of elements has the strong tendency to form anions?
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Metalloid among the following is:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The second most electronegative element in the periodic table is:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The electron affinity of halogens shows the order:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The ionization potential of the X^- ion is equal to:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Chlorine, bromine and iodine are placed in the seventh group of the periodic table because:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The most electropositive halogen is:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The atom larger in size as compared to oxygen is:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Which has the same electronic configuration as an inert gas?
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• The electronegativity of an inert gas is:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Electron affinity for a noble gas is approximately equal to:
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties
• Element 'X' belongs to group 17. Among group 17 elements, 'X' has the largest ionization enthalpy. What is the atomic number of...
  JEE Main · Chemistry · Classification of Elements and Periodicity in Properties

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