Question

statee the trends in physical properties on moving down the group. give an example of illustrate

Answer 1

Answer:

refer to attachment

Explanation:

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Answer 2

Explanation:

,The melting and boiling point of metals decrease on going down the group.

Example : Observe the trend in group 1 elements given the following table :

Metals                     m.p.                       b.p.

  Li                          180.5∘C               1347∘C

  Na                        94.5∘C                  883∘C

   K                         63.5∘C                  774∘C

From the above table , it is clear that m.p and b.p decrease from Li to K

.

The melting and boiling point of non-metal increase on going down the group.

Example : Observer the trend in Group 17elements given in the following table : 

Non−metals         m.p.              b.p.           Physicalstate 

Fluorine               −219.6∘C     −187∘C           Gas 

Chlorine               −101∘C        −34.6∘C          Gas

Bromine               −7.2∘C         +58.8∘C         Liquid 

Iodine                  +113.6∘C     +183∘C           Solid 

From the above table , it is clear that m.p and b.p increase from F to I.