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

1 answer:

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1) Atomic radius: It increases from left to right in a period
2) Ionic radius: It increases from left to right in a period
3) First ionization energy: It increases from left to right in a period
4) Melting point: Generally decreases from left to right in a period

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See the answer below.

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$Age=2.52*10^9 years$