Trends in Periodic Properties
This image shows the trends in periodic properties across the period and down the group.
Frequently Tested Topics:
Definitions of Ionization Potential, Electron Affinity, Electronegativity
Trends in Atomic Size, Ionization Potential, Electron Affinity, Electronegativity and Metallic Character across a period and down a group
Properties of Alkali Metals (Group 1) and Halogens (Group 17)
*Note that other aspects of the chapter are equally important.
Important Past Questions
Which Halogen has the greatest electron affinity? (2008)
Give reason: Ionization potential increases across a period. (2012, 2014, 2018)
State the period and group of an element based on its atomic number. (2010, 2014, 2017)
Example: Atomic number of an element Z is 16. State the group and period to which Z belongs.
State whether an element is metallic or non-metallic based on its atomic number. (2010, 2012, 2014, 2017, 2019)
Example: There are three elements E,F,G with atomic numbers 19, 8, and 17 respectively. Classify the elements as metals and non-metals.
Definitions of Ionization Potential, Electron Affinity, Electronegativity (2009, 2010, 2014, 2016, 2017, 2018, 2019)
Out of the given elements, which is the most/least electronegative. (2009, 2013, 2015, 2016, 2019)
Example: The element with the least electronegativity is: A] Lithium B] Carbon C] Boron D] Fluorine
Arrange in increasing/decreasing order of - metallic character/atomic size/ionization energy/electron affinity/electronegativity. (2015, 2017, 2019)
If an element has low ionization energy, it is likely to be _________ [metallic/non-metallic] (2008, 2016)