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5 Written questions

5 Matching questions

  1. An isotope has 30 protons, 36 neutrons, and 30 electrons. How many protons are in the nucleus?
  2. Most of the volume of an ato is occupied by the
  3. Isotopes of an element contain different numbers of
  4. Because any element used in the cathode produced electrons, scientist concluded that
  5. The electron was descovered by
  1. a 30
  2. b neutrons
  3. c all atoms contain electrons
  4. d Thomson
  5. e electron cloud

5 Multiple choice questions

  1. retains the chemicl identity of that element
  2. neutron
  3. amu
  4. remains the same
  5. The number of protons in an atom is its atomic number

5 True/False questions

  1. An alumin isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is40

          

  2. An atom's density is based upon itsnumber of protons

          

  3. The nucleus of an atom has all of the following characteristics except that itcontains nearly all of the atom's volume

          

  4. An atom of potassium has 19 protons and 21 neutrons. What is its mass number?40

          

  5. What did Rutherford conclude about the structure of the atomAn atom contains a small, dense, positively charged central region

          

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