Class IX

Interaction between highly electron deficient hydrogen and highly electronegative atom is called
  1. Covalent bond
  2. ionic bond
  3. dipole-dipole interaction
  4. hydrogen bond
Tendency of atoms to acquire eight electrons in their valence shell is
  1. octet rule
  2. duplet rule
  3. triplet rule
  4. none of above
Covalent compound among following is
  1. NaCl
  2. MgO
  3. H2O
  4. KF
Atoms of metals form
  1. molecules
  2. anions
  3. cation
  4. none of above
Non-metals have
  1. high ionization energies
  2. low ionization energies
  3. zero ionization energy
  4. infinite ionization energy
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