Reading the models back

Exercise and reference answers

Questions

1. Question

   Who placed electrons in stationary orbits?

   Choices

   1. Bohr
   2. Thomson
   3. Rutherford

   Correct choice

   Bohr

2. Question

   Whose model has a tiny dense nucleus?

   Choices

   1. Thomson
   2. Rutherford
   3. Bohr

   Correct choice

   Rutherford

3. Question

   Whose model is a sphere of positive charge?

   Choices

   1. Rutherford
   2. Bohr
   3. Thomson

   Correct choice

   Thomson

4. Question

   How many postulates did Bohr introduce?

   Choices

   1. three
   2. two
   3. five

   Correct choice

   three

Explanation