Question

The densities of Ca, Ba are 1.55 and 3.51 g cm–3 respectively. Based on Dobereiner’s

law of traids can you give the approximate density of strontium (Sr).​

Answer 1

Answer:

2.53.

Explanation:

Here(Ca, Sr, Ba) is a dobernier traid. so it has to obey dobernier rule.

Rule: Atomic mass of middle element is equal to the average of Atomic mass of other two elements.

so, by dobernier principle

Atomic weight of Sr = (at wt of Ca + at wt of Ba)/2.

= (1.55+3.51)/2.

= 5.06/2

= 2.53.

Answer 2

Answer:

2.53

Explanation:

(1.55+3.5)/2

5.06/2

2.53