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CHEMISTRY ASSIGNMENT #2 NAME:___________________________<br />
4. An atom of gold has an atomic number of 79 and an atomic mass of 197u.<br />
a. How many protons are there in one atom of gold?<br />
How many electrons are there in one atom of gold?<br />
How many neutrons are there in one atom of gold?<br />
How many protons are there in 10 atoms of gold?<br />
5. The unit of atomic mass is called an and its symbol is<br />
6. An atom of uranium has an atomic number of 92 and an atomic mass of 238u.<br />
a. How many protons are there in one atom of uranium?<br />
How many electrons are there in one atom of uranium?<br />
How many neutrons are there in one atom of uranium?<br />
How many protons are there in 10 atoms of uranium?<br />
7. Draw the Bohr diagrams for the first 20 elements. (use looseleaf)<br />
8. Arrange the atoms into 8 groups according to the number of electrons in the outer<br />
shell. Give each group a title, for example, one outer shell electron, two outer shell<br />
electrons, and so on...
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