Class IX

Boron is a
  1. metal
  2. metalloid
  3. non-metal
  4. gas
Tendency of a metal to loose electron is called
  1. electronegativity
  2. electro positivity
  3. electrolysis
  4. electroplating
Metals difficult to oxidize are called
  1. weak metals
  2. strong metals
  3. noble metals
  4. none of above
As we move across period electronegativity
  1. decreases
  2. increases
  3. remains same
  4. becomes zero
As compare to beryllium, magnesium is
  1. less electropositive
  2. more electropositive
  3. large in size
  4. both B and C
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