Question

1. List the elements in the increasing order of their electronegativity. Give reasons for your answer.
Krypton
Strontium
Copper
bromine
lead
cesium

Answer 1

Patterns of electronegativity in the Periodic Table

The most electronegative element is fluorine. If you remember that fact, everything becomes easy, because electronegativity must always increase towards fluorine in the Periodic Table.

Note: This simplification ignores the noble gases. Historically this is because they were believed not to form bonds - and if they don't form bonds, they can't have an electronegativity value. Even now that we know that some of them do form bonds, data sources still don't quote electronegativity values for them.
http://www.chemguide.co.uk/atoms/bonding/electroneg.html

Answer 2

http://www.thecatalyst.org/electabl.html

Answer 3

@cuanchi what a brilliant explanation