Class XI

A qualitative measure of the stability of an ionic compound is provided by
  1. Electron affinity
  2. lattice enthalpy
  3. ionization enthalpy
  4. electron gain enthalpy
When a gas phase atom in its ground state gains an electron. This is called
  1. ionization enthalpy
  2. Electron affinity
  3. electron gain enthalpy
  4. lattice enthalpy
The formation of the Cl2 molecule can be understood in terms of the sharing of a pair of electrons between the two chlorine atoms, each chlorine atom contributing one electron to the shared pair. Choose the most appropriate name of the bond that is formed
  1. ionic bond
  2. double bond
  3. multiple bond
  4. a single covalent bond
Inertness of noble gas was observed to be due to their electronic configurations: Choose the most appropriate
  1. Outermost orbitals of the noble gases are fully filled.
  2. Noble gases form ions to complete their outermost orbitals
  3. Total number of electrons in the outermost shell is duplets
  4. Atomic mass is low so they are stable
For N2, bond order is
  1. 1
  2. 3
  3. 2
  4. 4
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