Class IX

Ability of atom to attract electrons towards itself is called
  1. electron affinity
  2. electronegativity
  3. ionization energy
  4. shielding effect
Value of ionization energy
  1. decreases down the group
  2. increases down the group
  3. remains same down the group
  4. none of above
Decrease in force of attraction between valence electrons and nucleus by inner electrons is called
  1. screening effect
  2. shielding effect
  3. photoelectric effect
  4. dopler effect
size of atom
  1. size of atom
  2. size of proton
  3. size of neutron
  4. no. of electrons
Chemical properties depends upon
  1. electronic configuration
  2. valence shell electronic configuration
  3. atomic mass
  4. none of above
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