Question

part a
which of the following is not part of daltons atomic theory?
all atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.
most of the atoms mass and all of its positive charge is contained in a small core called the nucleus.
atoms combine in simple, whole - number ratios to form compounds.
each element is composed of tiny indestructible particles called atoms.
all of the above are part of the atomic theory.

Explanation:

• Dalton's Atomic Theory states that:
• Each element is composed of tiny indestructible particles called atoms.
• All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.
• Atoms combine in simple, whole - number ratios to form compounds.
• The statement “Most of the atom’s mass and all of its positive charge is contained in a small core called the nucleus” is part of Rutherford’s nuclear model of the atom, not Dalton’s Atomic Theory.

Answer:

Most of the atom’s mass and all of its positive charge is contained in a small core called the nucleus.