Question

according to daltons atom theory, how are the 5th and 6th postulate related?

Answer 1

The fifth postulate of Daltons atomic theory states that when atoms combine with one another to form molecules, they do so in simple whole number ratios, such as 1:1, 2:1, 2:3 and so on. The sixth postulate states that atoms of two elements combine in different ratios to form more than one compound. Sulphur combines with oxygen to form sulphur dioxide and sulphur trioxide, the combining ratios being 1:2 and 1:3 respectively. But sulphur and oxygen will always combine in simple whole number ratio according to fifth postulate.