Question Bank: STRUCTURE OF THE ATOM

Which particle was discovered by J.J. Thomson?

What did Thomson's model propose about the structure of the atom?

What was a major limitation of Thomson's atomic model?

What did Rutherford's gold foil experiment demonstrate?

How did Rutherford describe the nucleus?

In Thomson's model, what is used to describe the arrangement of electrons?

Which of the following particles does NOT exist in the nucleus of an atom?

What was one unexpected result of Rutherford's alpha particle experiment?

According to Dalton's atomic theory, what was a key belief about atoms?

What property of the nucleus leads to its positive charge?

In Rutherford's model, what primarily occupies the majority of an atom's volume?

Which atomic model introduced the idea of a nucleus?

What is the charge of a neutron?

How did Rutherford's findings challenge the previous atomic model?

What did the observations from Rutherford's gold foil experiment suggest about atomic structure?

What model did Bohr propose following Rutherford's findings?

Which of the following statements regarding atomic models is true?

What is defined as the total number of protons in an atom?

How can you calculate the mass number of an atom?

Which of the following statements is true about isotopes?

Which element has an atomic number of 6?

Why do isotopes of the same element have different mass numbers?

Isotopes have identical...

What does the notation 12C mean?

Which of the following pairs are isobars?

Which statement correctly describes the atomic number and mass number?

What is the charge of an electron?

Which scientist first identified the electron?

What is the mass of a proton compared to that of an electron?

What are canal rays primarily composed of?

When two objects are rubbed together, they can become electrically charged. What happens at the atomic level?

What is the primary function of electrons in an atom?

Which subatomic particle has a positive charge?

If an atom gains an electron, it becomes what type of particle?

Which statement is true about protons and electrons in an atom?

What did E. Goldstein discover in his experiments?

Which of the following best describes an atom?

Why are atoms considered to be electrically neutral?

What happens when two positively charged objects are brought close together?

Which of the following is an example of a positively charged ion?

Why did scientists conclude that atoms are divisible?

What is the main role of neutrons in an atom?

What is the valency of an element that has 1 electron in its outermost shell?

Which of the following elements has a valency of 2?

What term refers to the electrons in the outermost shell of an atom?

A sodium atom loses one electron during a chemical reaction. What is its valency?

Which element has a valency of 3, having three electrons in its outermost shell?

What is the maximum number of electrons that can occupy the L shell?

If an atom has 7 valence electrons, what would be its likely valency?

Which of the following elements is least likely to participate in a chemical reaction?

What is the relationship between an atom's valency and the number of valence electrons?

An atom with a valency of 3 typically needs to react with how many other atoms?

Which of the following elements has a valency of 0?

A fluorine atom has 7 electrons in its outermost shell. What is its valency?

What is the effect of having a completed outer shell on an element's chemical activity?

What is the valency of Magnesium, which has two electrons in its outermost shell?

Which element's valency can change based on its compound's formation?

When forming a covalent bond, how do atoms achieve stability?

What are isotopes?

Which pair of isotopes is related to carbon?

Which of the following isotopes is used in cancer treatment?

Isotopes of an element have:

Which of the following statements about isotopes is true?

In the context of isotopes, what does the term 'average atomic mass' refer to?

If chlorine has isotopes 35Cl and 37Cl in a ratio of 3:1, what is the average atomic mass?

Which isotope is commonly used as a tracer in biological studies?

Isotopes are important in determining which of the following?

Two isotopes of nitrogen are 14N and 15N. What distinguishes them?

In terms of stability, which isotope of uranium is particularly notable?

Isotopes of an element can have differing:

Which of the following isotopes is an example of an isobar?