One of the Main Features of Dalton's Atomic Theory No

question 30

Multiple Choice

One of the main features of Dalton's atomic theory no longer considered valid is: All atoms of each element are identical in every respect.Which of the following is the best explanation of why this feature is no longer considered valid?

• A)The existence of isotopes
• B)Mass is conserved in a chemical change
• C)Nearly all of the mass of an atom is concentrated in the nucleus
• D)The total charge of the electrons of an atom exactly balances the positive charge of the nucleus
• E)The planetary model of the atom has been shown to be incorrect

---

Definitions:

Financial Practices

The methods, strategies, and operations used by an organization or individual to manage their financial resources and records.

Voting Control

The power to influence or determine outcomes within an organization through the possession of voting shares or rights.

Durability

The ability of a product or material to withstand wear, pressure, or damage, maintaining its original form and functionality over time.

Barriers to Entry

Factors that make it difficult for new competitors to enter a market, protecting existing players from potential new entrants.