Question

Define and describe four properties of elements that display periodicity (show a trend) on the periodic table.

Answer 1

main reason of periodicity is arrangement of elements in increasing atomic numbers
1) down the group metallic charachter increasses
2)going left to right size decreases
3)going left to right metallic charahter decreases
4)going left to right Electonegativity increases
for more info http://dl.clackamas.cc.or.us/ch104-06/periodic.htm

Answer 2

Thank you so much

Answer 3

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