Question

atomic weights of Li,K are 7 and 39 of Li,Na,K triad.what is the atomic weight​

Answer 1

Answer:

full question please,.......

Answer 2

Answer:

we have to find out the atomic weight of Na( sodium)

we know that Li, Na and K form the dobreiner triad.

so , by this law

atomic weight of sodium = sum of mass of Li and K /2

= 7 + 39/2

= 46/2

= 23

that is the atomic weight of sodium...