Dobereiners law of triads work sheet by AIIMIIT

1.who is dobenier what was his contribution

2.define law of triads

3.what are advantages of debeniers law of rriads

4.what are disadvantages of law of triads

5.what are 3 triads he discovered in his life time

6.what are at wts of Li,Na,k

7.if at wts of Li and K are 7 and 39 what is weight of sodium according to law of triads

8.If x=10 ,y= 20 find z .using law of triads if x<y<z.

9.find y if x=4 z= 10.if x<y<z

10 .find x if y10 and z is 20 if x<y<z

11.what are at wts of cl,br,I

11.check whther cl,br !and l ibey law if triads

12.what are at wts of ca,sr,Ba .

13.check whther above elements obey law of triad

14.Dobenier belongs to which ckuntry and which year

15.why do we classify elements

16.define peridicity