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FIS AUG 2K15

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CHEMISTRY 1

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WELCOME TO HS 2 PADLET

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S orbital is the closest orbital to the nucleus, with other orbitals lining up further away. According to Pauli exclusion principle, the maximum is s2, where 2 represents the number of equivalent electrons

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special configuration of ions of transition elements

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special configuration of ions of transition elements

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special configuration of transition elements

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special configuration of transition elements

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electronic configuration (d&f-orbital) of the transition elements 

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electronic configuration (d&f-orbital) of the transition elements 

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electronic configuration of transition elements in the periodic table.

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electronic configuration of transition elements in the periodic table.

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4. special configuration of transition elements

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4. special configuration of transition elements

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4. special configuration of transition elements

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4. special configuration of transition elements

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- start to appear on the third shell/ n=3/ energy level 3. 5 types. Maximum 10 electrons.

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Iron is 1s2 2s2 2p6 3s2 3p6 3d6 4s2

in Iron ion it becomes 1s2 2s2 2p6 3s2 3p6 3d6 since 2 electrons have been removed.

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3. electronic configuration  of transition elements

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3. electronic configuration  of transition elements

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start to appear on 2nd shell / n=2 / energy level 2. 3 types : Px, Py, Pz. Can hold maximum 6 electrons.

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o Electrons must occupy available orbitals of lower energy before they fill orbitals of higher energy

o Building up concept

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Positive ions are formed by removing electron and negative ions are formed by adding electron.

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Chromium - 3d orbitals is 5 and 4s orbitals is 1 this is because half filled orbitals are more stable than partially filled orbitals.

Copper - 3d orbitals is 10 and 4s orbitals is 1 this is because half filled orbitals are more stable than partially filled orbitals.

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3s orbital is the last orbital to be filled with 2 electrons which shows that Mg is in Group 2.