Answer to Question #153323 in Physical Chemistry for Ariel

Question

The elements of period 2 of the periodic table (Li to Ne) show periodic trend in their properties

(i) What is meant by the term ‘periodic trend’?

Answer 1

From Li to Ne in the 2nd period there are several properties that is physical (mostly) and also chemical properties varied differently along the period from left to right. The variation of any kind of properties is known as periodic trend.

As for example the radius of atom decreases along the 2nd period due to the increase in effective nuclear charge so this is a periodic trend.

Similarly electronegetivity increases from left to right this is also a periodic trend.

So periodic trend is nothing but the change of several properties along a period.