Class VII

Under STM atoms can be
  1. observed
  2. manipulate
  3. both a and b
  4. transferred
Diameter of a nucleus is
  1. 0.00001nm
  2. 1nm
  3. 0.1nm
  4. 0.01nm
Positively charged particle of atom is called
  1. protons
  2. neutrons
  3. electrons
  4. charges
Number of protons in a carbon atom is
  1. 6
  2. 11
  3. 12
  4. 10
. Modern model of atom shows that electrons are outside nucleus in region of high
  1. probability
  2. velocity
  3. speed
  4. energy level
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