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Presentation transcript:

0:56 0:55 0:54 0:53 0:57 0:58 1:02 1:01 1:00 0:59 0:52 0:51 0:44 0:43 0:42 0:41 0:45 0:46 0:50 0:49 0:48 0:47 1:03 1:04 1:19 1:18 1:17 1:16 1:20 1:21 1:25 1:24 1:23 1:22 1:15 1:14 1:08 1:07 1:06 1:05 1:09 1:10 1:13 1:12 1:11 0:40 0:39 0:09 0:08 0:07 0:06 0:10 0:11 0:15 0:14 0:13 0:12 0:05 0:04 0:00 0:00 0:00 0:00 0:00 0:00 0:03 0:02 0:01 0:00 0:16 0:17 0:32 0:31 0:30 0:29 0:33 0:34 0:38 0:37 0:36 0:35 0:28 0:27 0:21 0:20 0:19 0:18 0:22 0:23 0:26 0:25 0:24 3:00 1:26 2:30 2:29 2:28 2:27 2:31 2:32 2:36 2:35 2:34 2:33 2:26 2:25 2:18 2:17 2:16 2:15 2:19 2:20 2:24 2:23 2:22 2:21 2:37 2:38 2:53 2:52 2:51 2:50 2:54 2:55 2:59 2:58 2:57 2:56 2:49 2:48 2:42 2:41 2:40 2:39 2:43 2:44 2:47 2:46 2:45 1:27 2:14 1:43 1:42 1:41 1:40 1:44 1:45 1:49 1:48 1:47 1:46 1:39 1:38 1:31 1:30 1:29 1:28 1:32 1:33 1:37 1:36 1:35 1:34 2:13 1:50 2:06 2:05 2:04 2:03 2:07 2:08 2:12 2:11 2:10 2:09 1:51 2:02 1:55 1:54 1:53 1:52 2:01 1:56 2:00 1:57 1:59 1:58 Do Now Copy down HW What is the term used to describe how strong of a pull a nucleus has on electrons? Electronegativity What are the two main factors that contribute to this? The number of protons (pulling power) The distance between the nucleus and the outer electrons

Types of Ions Charged atoms

Cations Formed when an atom loses one or more electrons WRITE DOWN Cations Formed when an atom loses one or more electrons Positive charge Example: Na becomes a Na+ cation Draw a Bohr diagram of Na Remove the valence electron to form Na+ What can you conclude about the size of a cation compared to its neutral atom

Anions Formed when an atom gains one or more electrons Negative charge WRITE DOWN Anions Formed when an atom gains one or more electrons Negative charge Example: F becomes an F- Anion Draw a Bohr diagram of F Add a valence electron to form F- What can you conclude about the size of a Anion compared to its neutral atom (Hint: it is harder for nucleus to keep a tight hold on additional electrons)

Tricks to Remember Cations Cats are small t for + Anions n for – WRITE DOWN Tricks to Remember Cations Cats are small t for + Anions n for – If cations are small, anions must be large

Isoelectronic Iso (same) Electronic (electrons) WRITE DOWN Isoelectronic Iso (same) Electronic (electrons) Atoms or ions with the same number of electrons Example: Na+ and Ne Ca2+ and K+

Regents Questions

Regents Questions

Regents Questions

Regents Questions

Regents Questions

Quiz (5pts) Which ion has the largest radius? Draw a Bohr diagram of each and give a written explanation to justify you answer. Na+ Mg2+ K+ Ca2+