Question

which statement belongs to dalton’s atomic theory?
atoms have a massive, positively charged center.
atoms cannot be created or destroyed.
atoms can be broken down into smaller pieces.
electrons are located in energy levels outside of the nucleus.

Explanation:

Dalton's atomic theory states that atoms are indivisible and indestructible (in chemical reactions, atoms cannot be created or destroyed). Let's analyze each option:

• "Atoms have a massive, positively charged center" refers to Rutherford's discovery of the nucleus, not Dalton's theory.
• "Atoms can be broken down into smaller pieces" contradicts Dalton's view that atoms are indivisible.
• "Electrons are located in energy levels outside of the nucleus" is part of Bohr's or modern atomic models, not Dalton's.
• "Atoms cannot be created or destroyed" aligns with Dalton's postulate about the conservation of atoms in chemical processes.

Answer:

Atoms cannot be created or destroyed.