unit 1.docx - Key Questions for unit 1 Lesson 1 1 Complete the blank spaces in the chart for the parts of the atom based on the given information Name

unit 1.docx - Key Questions for unit 1 Lesson 1 1 Complete...

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Key Questions for unit 1 Lesson 1 1. Complete the blank spaces in the chart for the parts of the atom based on the given information. Name Z (atomic #) A (mass #) Number of protons Number of electrons Number of neutrons Nuclide symbol Iron 26 58 26 26 32 Fe 26 58 lead 82 207 82 82 125 Pb 82 207 Tin 50 122 50 50 72 Sn 50 122 Xenon 54 135 54 54 81 Xe 54 135 Mercury 80 202 80 80 122 Hg 80 202 Barium 56 139 56 56 83 Ba 56 139
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2. Draw a complete Bohr-Rutherford diagram showing all the parts of the atom for N 7 14 , S 16 33 and Ca 20 40 . Lesson 2 3. A) List all the numbers in the table refer to 1) An alkali metal (number 1) 2) A halogen (number 8) 3) An alkaline earth metal (number 2) 4) A noble gas (numbers 9,10) 5) Elements in period 4 (number 1,3 and 8) B) Which numbers refer to non-metals? Number 4,6 and 7 4. Place the atoms C, Na, and Si in decreasing order of atomic radius. Explain your choice of order. The order of decreasing atomic radius is Na , Si , C . This follows the trends in radius . Carbon is the smallest , as it is in period 2 , and the rest are in period 3 has an additional energy level , making all elements in the period larger . In period 3 , atomic radius decreases as you go to the right since the nuclear charge increases as you go to the right. Thus , Na is larger than Si . 5. Place the atoms F, N, and P in decreasing order of ionization energy. Explain your choice of order.
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The order of ionization energy from largest to smallest will be F, N , P . Phosphorus is in
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