Students can refer to this notes

X STANDARD, BSS




PERIODIC PROPERTIES


I. Name the following:
1. The most electronegative element in the periodic table - Fluorine
2. The least electronegative element in the periodic table - Caesium
3. The element which has highest ionization potential - Helium

4. The element which has lowest ionization potential Caesium
5. The element which has highest electron affinity - Chlorine
6. The element which has largest atomic size - Caesium
7. The element which has smallest atomic size - Helium

8. The element which is most metallic - Caesium
9. The element which is least metallic and most non metallic - Fluorine
10. The group which has zero electron affinity - Group 18
11.The group which has highest electronegativity - Group 17
12. Group which is highly metallic - Group1

13. Group which is highly non metallic Group 17
14.Group which has highest ionization potential Group
-
18
15.Cause for periodicity Same number of electrons in the outer most orbit /
similar electronic configuration

II. Name the elements of:
1. Period1- Hydrogen and Helium
Fluorine and
2 Period 2 - Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen.
Neon
3. Period 3 - Sodium, Magnesium, Aluminium. Silicon, Phosphorous, Sulphur,
Chlorine and Argon
4. Group 1 - Hydrogen, Lithium, Sodium, Potassium, Rubidium, Caesium and
Francium
Radium
5. Group 2 Beryllium, Magnesium, Caleium, Strontium, Barium and
-




6. Group 17 - Fluorine, Chlorine, Bromine, lodine and Astatine
7. Group 18 - Helium, Neon, Argon, Krypton, Xenon and Radon


III. Define the following:
. Periodic properties - The properties that reappear at regular intervals is called
periodic properties.


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