What is the ratio of sr ions to br ions in a neutral compound?

The pressure in a fluid is affected by which characteristics of that fluid

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

How are isotopes of the same chemical element alike? how are they different?