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Locate element Na on the periodic table. Fill in the following: Element Name | Number of protons | Number...

9. Locate element Na on the periodic table. Fill in the following:
Element Name | Number of protons | Number of valence electrons | Cation or anion
10. Fill in the following about families:
Family Name | Column Number | Charge it makes | Number of Valence Electrons | Solids, liquids, or gases
1
2
17
18 | 0 (won't react) | All 3!
11. Fill in the blank using the word bank.
ionization energy | electronegativity | atomic radius
Moseley | Mendeleev
• ________ arranged the periodic table by atomic mass and chemical properties.
• ________ arranged the periodic table by atomic number and chemical properties.
• ________ refers to the size of the atom.
• ________ refers to the energy it takes to remove a valence electron from an atom.
• ________ refers to the power of an atom to attract an electron towards itself.
12. A block of Gallium occupies a volume of 19.7 mL and weighs 50.4 grams. What is its density?
13. What is the mass of a block with a density of 3.67g/mL and a volume of 225mL?

Answer

  1. Element Name: Sodium
    Number of protons: 11
    Number of valence electrons: 1
    Cation or anion: Cation

  2. Family Name: Alkali Metals
    Column Number: 1
    Charge it makes: +1
    Number of Valence Electrons: 1
    Solids, liquids, or gases: Solids

    Family Name: Alkaline Earth Metals
    Column Number: 2
    Charge it makes: +2
    Number of Valence Electrons: 2
    Solids, liquids, or gases: Solids

    Family Name: Halogens
    Column Number: 17
    Charge it makes: -1
    Number of Valence Electrons: 7
    Solids, liquids, or gases: Gases

    Family Name: Noble Gases
    Column Number: 18
    Charge it makes: 0 (won't react)
    Number of Valence Electrons: 8
    Solids, liquids, or gases: All 3!

  3. Mendeleev arranged the periodic table by atomic mass and chemical properties.
    Moseley arranged the periodic table by atomic number and chemical properties.
    Atomic radius refers to the size of the atom.
    Ionization energy refers to the energy it takes to remove a valence electron from an atom.
    Electronegativity refers to the power of an atom to attract an electron towards itself.

  4. Density = Mass / Volume = 50.4 g / 19.7 mL = 2.56 g/mL

  5. Mass = Density × Volume = 3.67 g/mL × 225 mL = 825.75 g

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