Describe the difference between atomic mass and mass number. Please be sure to use complete…

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1. Describe the difference between atomic mass and mass number. Please be sure to use complete sentences.

2. Draw the 3 atoms (showing the subatomic structure of each atom) described below and then answer the following questions:

Atom 1: 6Li

Atom 2: ‘Li Atom 3: 7Li+1

a. Label the differences in subatomic structure of each atom. b. Identify two atoms that are different isotopes. c. Identify two atoms that are different ions.

3. A common debate amongst chemists is about the placement of the hydrogen element on the modern periodic table. Some argue it is in the right place, group 1, above Lithium. Others argue it would be better placed in group 7, above Fluorine and Next to Helium.

a. Give one argument to support Hydrogens placement in group 1. (Another way to ask this question is why is hydrogen placed in group 1?)

b. Give one argument to support placing Hydrogen in group 7. (Another way to ask this question what does hydrogen have in common with other group 7 elements)

4. Chose an element from the periodic table that fits each description below. (there are multiple correct answers)

a. An example of a metalloid. b. An example of a transition metal. c. An element with a smaller ionization energy then Strontium (Sr) d. An element that is smaller in size then Nitrogen (N) e. An example of a Halogen element.

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