Unit 1 Key Questions.docx - Unit 1 Key Questions Chemistry SCH3U-C 1 Complete the blank spaces in the charge for the parts of the atom based on the

Unit 1 Key Questions.docx - Unit 1 Key Questions Chemistry...

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Unit 1 Key Questions Chemistry SCH3U-C 1. Complete the blank spaces in the charge for the parts of the atom based on the given information. Name Z A Number of Protons Number of electrons Number of neutrons Nuclide symbol Iron 26 58 26 26 32 58 26 Fe Lead 82 207 82 82 125 207 82 Pb Tin 50 122 50 50 72 122 50 Sn Xenon 54 135 54 54 81 135 54 Xe Mercury 80 202 80 80 122 202 80 Hg Barium 56 139 56 56 83 139 56 Ba 2. Draw a complete Bohr-Rutherford diagram showing all the parts of the atom for 14 7 N, 33 16 S, and 40 20 Ca.
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Unit 1 Key Questions Chemistry SCH3U-C 3. a) List all of the numbers in the table that refer to i. An alkali metal – 1 ii. A halogen – 8 iii. An alkaline earth metal – 3 iv. A noble gas – 9 and 10 v. Elements in period 4 – In their respective order from left to right: potassium, cobalt, and bromine b) 4, 5, 7, 8, 9, and 10 refer to non-metals 4. Na, Si, and C is the order of decreasing atomic radius. The atomic radius increases going down a column (more energy levels increase the radius) and decreases going across a row (nuclear charge increases, pulling electrons closer to the nucleus, making the radius smaller). Carbon is the only element in period 2, while silicon
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