IMAT Atomic structure questions

Sample questions

1. 1IMAT Doutor

   An element occurs as two isotopes of mass number 10 and 11, each with 50% abundance. Its relative atomic mass is:
   1. A10.0
   2. B10.2
   3. C10.5
   4. D11.0
   5. E21.0
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2. 2IMAT Doutor

   The emission spectrum of an atom consists of separate lines rather than a continuous band because:
   1. Athe atom contains very few electrons
   2. Blight travels at a constant speed
   3. Cthe nucleus also emits radiation
   4. Dthe electrons repel one another
   5. Ethe energy levels are quantised
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