Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of...
Transcript of Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of...
![Page 1: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/1.jpg)
![Page 2: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/2.jpg)
Periodic Properties of Elements
• Size of Atom
• Ionization Energy
• Electron Affinity
• Metallic and Non-metallic properties
• Electronegativity
![Page 3: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/3.jpg)
Size of Atom
• In a same group, the lower we move from upper part, a new shell is added to the outer layer.
![Page 4: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/4.jpg)
Atom’s Size in a period
• In a period, the more we move from left to right, the number of electron and proton increases but the shell number remains unchanged.
![Page 5: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/5.jpg)
Size of Atom in a period
![Page 6: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/6.jpg)
Summary
• The lower we move from upper part in a group, the size of atom increases.
• The more a period progresses from left to right, the size of atom decreases.
![Page 7: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/7.jpg)
Poll Question -1
The picture of elements of group 17 is given beside:
Which is the smallest of the following Elements?
(a) F
(b) Cl
(c) Br
(d) I
![Page 8: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/8.jpg)
Attraction of last orbit’s electron by nucleus
• If distance is increased then attraction will decrease.
![Page 9: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/9.jpg)
Metallic and Non-metallic Properties
• If the atom of an element donates electron, it is called Metal and ifthe atom of an element accept electron, it is called Non-metal.
• In a period, as the size of atom increases the metallic propertyincreases too because donating electron becomes much easierthen.
![Page 10: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/10.jpg)
• The energy that is required to transform an element into 1 mole positive ion removing 1 mole electron from its 1 mole atom in its gaseous state is called ionization energy of that element.
Ionization Energy
![Page 11: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/11.jpg)
• As the size of atom decreases, ionization energy of the atom increases.
Ionization Energy
![Page 12: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/12.jpg)
• The lower we move from upper part in a group, the size of atom increases. Therefore , the ionization energy decreases.
• In a period , the more we move from left to right, the size of atom decreases. Therefore , the ionization energy increases .
Ionization Energy
![Page 13: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/13.jpg)
Poll Question -2
The picture of elements of group 1 is given beside:
Which of the following element has the most ionization energy ?
(a) Li
(b) Na
(c) K
(d)Rb
![Page 14: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/14.jpg)
Electron Affinity
• The energy emitted when we try to transform an element in itsgaseous state into 1 mole negative ion by injecting 1 mole electroninto its 1 mole atom is called the electron affinity of that element.
![Page 15: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/15.jpg)
Electron Affinity
• As the size of an atom decreases, electron affinity increases.
![Page 16: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/16.jpg)
Poll Question -3
The picture of elements of group 17 is given beside:
Which of the following element has the lowest electron affinity?
(a) F
(b) Cl
(c) Br
(d) I
![Page 17: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/17.jpg)
Sharing of Electron
![Page 18: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/18.jpg)
Electronegativity
![Page 19: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/19.jpg)
Electronegativity
• As the size of atom decreases, electronegativity increases.
![Page 20: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/20.jpg)
Poll Question -4
The picture of elements of group 17 is given beside:
Which of the following element has the highest
electronegativity?
(a) F
(b) Cl
(c) Br
(d) I
![Page 21: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/21.jpg)
Summary
• In a period, the more we move from left to right:
Increases
Ionization energy
Electron Affinity
Non-metallic properties
Electronegativity
![Page 22: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/22.jpg)
Summary
• The lower we move from upper part in a group:
Decreases
Ionization energy
Electron Affinity
Electronegativity
![Page 23: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/23.jpg)
Halogen Group
• The elements of group 17 are called halogen.
![Page 24: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/24.jpg)
Inert Gas
• The elements of group 18 are called inert gas.
![Page 25: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/25.jpg)
Transition Elements
Elements of Group- 3 to Group-12 are known as transition elements.
![Page 26: Periodic Properties of Elements - Udvash Online Class Study...2020/07/19 · Periodic Properties of Elements • Size of Atom • Ionization Energy • Electron Affinity • Metallic](https://reader035.fdocuments.net/reader035/viewer/2022070218/6124706234e1c8499e21da3d/html5/thumbnails/26.jpg)
www.udvash.com