Question

how many of the following statements regarding daltons atomic theory are still believed to be true?
i. elements are made of tiny particles called atoms.
ii. all atoms of a given element are identical.
iii. a given compound always has the same relative numbers and types of atoms.
iv. atoms are indestructible.

Explanation:

Step1: Analyze statement I

According to Dalton's atomic theory, elements are made of tiny particles called atoms. This is a fundamental postulate of Dalton's theory.

Step2: Analyze statement II

Dalton's atomic theory states that all atoms of a given element are identical in properties like mass, size etc.

Step3: Analyze statement III

A given compound always has the same relative numbers and types of atoms as per Dalton's theory.

Step4: Analyze statement IV

Atoms are indestructible (in the context of chemical reactions as per Dalton's theory, atoms are not created or destroyed in chemical reactions, just rearranged).

Answer:

D. 4