sch4u_unit1_jedaiahbalden (1).docx

sch4u_unit1_jedaiahbalden (1).docx - Lesson 1 key questions...

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Lesson 1 key questions: 1. Increasing funding could be beneficial in the way of looking closer into other elements and their isotopes to be used as a safer method of screening. Technetium 99m is good in the sense that it has a short half life, so you can examine things, and then it leaves the body so the radiation isn’t harming you. With increased funding we could potentially discover other elements that work more efficiently. 2. The electrons in the unknown element come from different orbitals, so the difference between the lines would be that the ultraviolet is of higher energyA)
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3a b) Zirconium 4+ ion works because it would take away the 2 electrons in the 4d subshell, and 2 electrons from the 5s subshell. making the element have a full orbit and therefore be stable. c) The zirconium atom does not have a full valence in its 4d subshell so it is not very stable and wants to gain or lose electrons to become stable. Zirconium ion allows this element to become stable and by adding 4 protons to neutralize the 4 electrons in the 4d/5s subshell. Lesson 2 Key Questions:
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6b. The type of hybrid orbitals found in NH3 is sp3, it creates 4 orbitals using 1s and 3p orbitals. 3 of these will occur in bonding and one will be a lone pair.
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